How many kilograms of tin will be required to make 250 kg of an alloy, if the alloy must contain 81% copper, 14% tin and 5% lead?

Answers

Answer 1

Answer:

35

Step-by-step explanation:

all are obeying a constant ratio

copper 81tin 14⇒?lead 5total 100 ⇒250?=250*14/100=35
Answer 2
the answer is 35bb. good luck. by.


Related Questions

(28)^3 + (-15)^3 +(-13)^3 calculate using identities



give free fire also ​

Answers

Answer:

answer is 16380

Step-by-step explanation:

answer is 16380

Answer:

16380

Step-by-step explanation:

We can see that:

28 + (-15) + (-13) = 0

Use the following identity:

a³ + b³ + c³ = 3abc, if a + b + c = 0

Substitute the values to get:

28³ + (-15)³ + (-13)³ = 3*28*(-15)(-13) = 16380

Round 123,949 to the underlined point. 4 is highlighted

Answers

[tex]\\ \sf\longmapsto 123,949[/tex]

9 is greater than 5

[tex]\\ \sf\longmapsto 123,95[/tex]

5=5

[tex]\\ \sf\longmapsto 123,9[/tex]

9 is greater than 5

[tex]\\ \sf\longmapsto 124[/tex]

4 is less than 5

[tex]\\ \sf\longmapsto 12[/tex]

2 is less than 5

[tex]\\ \sf\longmapsto 1[/tex]

Note

Write the number until underlined point.I did it till end

Answer:

The number is 123949 (or 123.949 in case comma stands for decimal)

According the rounding rule

if the number to the right is ≥ 5, round up the number to the left, otherwise leave as is, if decimal the number to the right drops, if whole number it is replaced with zero

Round to the number 4, the second number from the right:

123950

or

123.95

11. There are 600 students in a school. If 20% students are girls, find the number of girls.​

Answers

Answer:

120

Step-by-step explanation:

20% of 600

= 120 girls

Explanation

Total no. of students = 600%

20% of the total are girls

No. of girls = 20% of 600

20/100 × 600

⅕ × 600

120

No. of girls is 120

Solve for x: x – 23 = 2

Answers

Answer:

X=25

Step-by-step explanation:

This is because X has to be greater than 23. Because you are taking away 35 and the answer is 2, you have to add 23 and 2, and that gives you 25!

!Can SOME1 Help! Help FAST

A gym membership has an enrollment fee of $25 and costs $33 each month. Which expression represents the cost of the gym membership for m months?

A. 25+33m=c
B. 25+33m
C. 33+25m=c
D. 33+25m

Answers

Answer:

A. 25+33m=c

Step-by-step explanation:

Because gym membership for m month will cost the enrollment fee along with the monthly fee multiplied by the number of months (m).

So, the expression will be:

25 + 33m = c

Whoever answers this get 50 point I need it ASAP tho

Answers

Step-by-step explanation:

For the parabola( top question)

X intercepts are (2,0) (4,0)Y intercepts are (0,4)Intervals of Increasing are [3, ♾)Intervals of decreasing are (- ♾, 3]The domain is All Real Numbers or (-♾, ♾)The range is [1, ♾)There is no maximum value of this function The minimum value is -1The axis of symmetry is x=3f(6)=4

For the absolute value equation, bottom question

X intercepts is (2,0)Y intercepts are (0,3)The Intervals of Increasing are [2,infinity)The Intervals of decreasing are ( negative infinity,2]The domain is All Real Numbers or (negative ♾, positive ♾)Range is [0, positive ♾)There is no maximum value of the functionThe minimum value is 0f(-1)=4.5

Answer:

Step-by-step explanation:

For the parabola( top question)X intercepts are (2,0) (4,0)Y intercepts are (0,4)Intervals of Increasing are [3, ♾)Intervals of decreasing are (- ♾, 3]The domain is All Real Numbers or (-♾, ♾)The range is [1, ♾)There is no maximum value of this function The minimum value is -1The axis of symmetry is x=3f(6)=4For the absolute value equation, bottom questionX intercepts is (2,0)Y intercepts are (0,3)The Intervals of Increasing are [2,infinity)The Intervals of decreasing are ( negative infinity,2]The domain is All Real Numbers or (negative ♾, positive ♾)Range is [0, positive ♾)There is no maximum value of the functionThe minimum value is 0f(-1)=4.5

Tyler rolled a six-sided number cube, recorded the results, and then rolled again. What is the probability that the first roll was an odd number and the second roll was a number less than 3

Answers

Answer:

9

Step-by-step explanation:

Please help. I don’t understand these

Answers

you should just add the numbers than put an x after like for the first 7x

Answer:

A.7x

B.8x -1

C.6x+12

D 4+3x

E.13x-7

express 3x-x^2 as m-(x-n)^2. Ill give brainliest to correct answer!

Answers

Answer:

(i) 2x+3y=9.3

5

ˉ

⇒2x+3y−9.3

5

ˉ

Comparing the equation with ax+by+c=0

a=2,b=3,c=−9.3

5

ˉ

Answer:

[tex]\frac{9}{4}[/tex] - (x - [tex]\frac{3}{2}[/tex] )²

Step-by-step explanation:

Given

3x - x² ← factor out - 1 from each term

= - (x² - 3x)

Using the method of completing the square

add/subtract ( half the coefficient of the x- term)² to x² - 3x

= - (x² + 2(- [tex]\frac{3}{2}[/tex])x + [tex]\frac{9}{4}[/tex] - [tex]\frac{9}{4}[/tex] )

= - (x - [tex]\frac{3}{2}[/tex] )² - 1(- [tex]\frac{9}{4}[/tex] )

= [tex]\frac{9}{4}[/tex] - (x - [tex]\frac{3}{2}[/tex] )²

Subtract: 7 7/10 -3 4/5 =

Answers

Answer:

3 9/10

Step-by-step explanation:

in first step convert mix fraction into simple fraction then take LCM and then subtract it.

II. Round to the nearest hundred.
11. 582
12. 1,234
13. 640
14. 770
15. 1,104

Answers

Answer:

11. 600

12. 1,200

13. 600

14. 800

15. 1,100

Step-by-step explanation:

look at the number in the 'tens' column. if the number is between 1-4, you round down, if the number is between 5-9, you round up.

Solve the given equation, enter your answer as "x= " and then your answer.

Example: x = 5

6=210

Answers

Answer:

×=204

Step-by-step explanation:

6=210

210-6

x=204

A waiter receives tips from each customer. On average, the tip is 15% of the customer’s bill. At this rate, which of the following is closest to the tip the waiter can expect when a customer has a bill that is $78.20?

A) $8.00

B) $10.00

C) $12.00

D) $14.00


(Pls add in the step-by-step explanation)

Answers

Answer:

C) $12.00

Step-by-step explanation:

Take the price of the bill

78.20

Find 10 %

78.20 * .1

7.82

Take half ( which is 5%)

3.91

Add the two amounts together

7.82+3.91

11.73

Rounding to the nearest dollar

12.00

OR

Round the bill to 80.00

Take 15%

80 * .15

12.00

PLS HELPPPP!! Im begging u plss

Answers

Each are 60.5°
Explanation: 180-59=121
121/2=60.5

Answer:

angle y=59 degrees

angle a= 62 degrees

Step-by-step explanation:

angle t =59

angle t=angle y(given)

therefore;

  angle y=59 degrees

angle a +angle t +angle y=180(sum of the interior angles of a triangle)

 a          +59        +59        =180

               a+118                  =180

                                     a   =180-118

                                       a =  62 degrees

205 students enrolled in a freshman-level chemistry class. By the end of the semester, 4 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed.

Answers

Answer: 164 students passed and 41 students failed.

Step-by-step explanation:

Let the number of students be x

x students failed, but 4 times the failed students passed.

So 4x students passed and x students failed.

4x + x = 205

5x = 205

x = 205/5

x = 41

41 times 4 is 164 and 41 times 1 is 41.

So 164 students passed and 41 students failed

What is 5 - 3/4

Please help

Answers

Answer:

[tex] \frac{17}{4} = 4 \frac{1}{4} [/tex]

Step-by-step explanation:

[tex]5 - \frac{3}{4} [/tex]

[tex] \frac{5}{1} - \frac{3}{4} = \frac{5 \times 4}{1 \times 4} = \frac{3}{4} [/tex]

[tex] \frac{20}{4} - \frac{3}{4} = \frac{20 - 3}{4} [/tex]

[tex] = \frac{17}{4} = 4 \frac{1}{4} [/tex]

Answer:

17/4-4 1/4 or 4.25

Step-by-step explanation:

Simplify

12 - 6(2x + 7)

Answers

Answer:

-12x - 30

Step-by-step explanation:

12 - 6(2x + 7)

=> 12 - 12x - 42

=> -12x - 30

Answer:

6 (-5-2x)

Step-by-step explanation:

12-6(2x+7)

6(2-(2x+7)) factor the expression

6(2-2x-7) remove parentheses

6(5-2x) answer!

A bag of kibble and 4 cans of cat food cost $8.40. The kibble
costs $6. Use the equation 4x+6= 8.40 to find x, the cost of
one can of cat food.
A $0.65
B $0.60
C $0.30
D$0.70

Answers

Answer:

B: $0.60

Step-by-step explanation:

4x+6=8.40

4x=2.40

2.40 / 4 = .6

.6 = 0.60 or 60 cents

Answer:$0.60

Step-by-step explanation:

A bag a kibble is 6$

Subtract the cost for the kibble to the cost of all products.

  $8.40

-  $6.00  

  $2.40...  is the cost for all 4 cans of cat food.

Then divide $2.40 by 4... That will be B) $0.60

     

3. Find (1 3)(x) when f (x) =
Vx+3
Vx+3 (1 point)
and
g(x)=
2x
x2 +6x+9
of g)(x) =
2x2
√x+3
(g)(x) =
2x2
OF 3)(x)
?? +9
of g)(x) =
x+3
2x²
22

Answers

Answer:

The choose 3.

[tex] \frac{x + 3}{2 {x}^{2} } [/tex]

1. Corey wrote the number 47,378. How many times greater is the 7 in the thousands place, than the 7 in the tens place?​

Answers

Answer:

100 times larger.

Step-by-step explanation:

The 7 in the thousands place can be written as 7000

The 7 in the tens place can be written as 70

Times greater = 7000 / 70 = 100

So the answer is 100 times larger for the 7 in the thousands place to the 7 in the 10s place.

Multiply 546.1 × 0.52 = ____

Answers

Answer:283.972 is your final answerHope this helps!!! <3

A hot air balloon went from an elevation of 6,813 feet to an elevation of 3,168 feet in 54 minutes. What was its rate of descent?

Answers

I agree that you are still trying so hard and to not get to see you too lol

which situation results in -6 as a final value

Answers

Answer:

Example:

0 - 6 = -6

4 - 10 = -6

Let ABC be an isosceles triangle at A. Take point D on side AC, point E on side AB such that AD = AE a) Compare the angles ABD and ACE b) Let I be the intersection of BD and CE. What kind of triangle is ΔIBC? Why ?

Answers

9514 1404 393

Answer:

  a) they are congruent

  b) isosceles; ∠IBC≅∠ICB

Step-by-step explanation:

a) We are given that ΔABC is isosceles, such that AB≅AC. Points D and E are located so that AD≅AE. Of course, ∠A≅∠A, so ΔACE ≅ ΔABD by SAS. Then angles ABD and ACE are congruent by CPCTC.

__

b) Angle IBC is the difference between angle ABC and angle ABD. Angle ICB is the difference between angle ACB and angle ACE. These differences are between values that are the same, so the differences are the same. That means ∠IBC≅∠ICB, and ΔIBC is isosceles.

Help please help please give me explanation.NO LINKS OR I Will Report You

Answers

X = -160/7 because If we plug this digital into x it makes sense and completes the equation hope this helps <33
Can u make me brainlst

Please help me please hurry

Answers

Answer:

A = $10.50

B = $17.50

C = $24.50

Step-by-step explanation:

that's the question ?? ​

Answers

Step-by-step explanation:

Before we answer, the area of a Circle given it radius is

[tex]a = \pi r {}^{2} [/tex]

The area of a circle given it diameter is

[tex]a = \pi( \frac{d}{2} ) {}^{2} [/tex]

So let answers question 1-4.

1. The area is

[tex]1024\pi[/tex]

2. The area is

[tex]576\pi[/tex]

3.

[tex]1.225\pi[/tex]

4.

[tex]309.76\pi[/tex]

For the 5th problem, circumference is

[tex]\pi \times d[/tex]

where d is the diameter and

[tex]2\pi r[/tex]

where r is the radius.

A circumference of 100 m means the radius is 50 because

[tex]2\pi \times r = 100\pi[/tex]

[tex]r = 50[/tex]

So this means the area is

[tex]2500 {\pi}[/tex]

A 90% confidence interval for a proportion is found to be (0.52, 0.58) . What is the sample proportion?

Answers

Answer: Choice A)  0.55

Explanation:

For the confidence interval (a,b), the midpoint is c = (a+b)/2

This midpoint is the sample proportion. This is because the confidence interval is built around this center point.

The midpoint of the interval (0.52, 0.58) is (0.52+0.58)/2 = 0.55

which expression is equal to 72 +63 ?
a. 9(8+7)
b. 8(9+7
c. 7 (10+9)
d. 6 (12+10)​

Answers

Answer:

Your answer is option a.

Answer:

a. 9(8+7)

Step-by-step explanation:

If you distribute the 9 into the equation, You're basically multiplying the 9 by each term so it really becomes:

(9*8) + (9*7)

Which leaves you with:

72 + 63


Determine the largest positive integer N such that 1005! is divisible by 10N.

Answers

9514 1404 393

Answer:

  N = 250

Step-by-step explanation:

The way your question is written, the answer is a number of 2582 digits, much too large to show here. We assume you actually want N such that 10^N is the largest power of 10 that will divide 1005!.

__

That factor is limited by the number of factors of 2 and 5 in 1005!. Of those, there are far more factors of 2, so the actual limit is the number of factors of 5 in 1005!.

Every 5th number is divisible by 5, so there are 1005/5 = 201 numbers divisible by 5 in 1005!.

Every 5th one of those is divisible by another factor of 5, so an additional 201/5 ≈ 40.

Every 5th one of those is divisible by another factor of 5, so an additional 40/5 = 8.

Finally, every 5th one of those has yet another factor of 5, so an additional 8/5 ≈ 1.

Then the total number of factors of 5 in 1005! is 201 +40 +8 + 1 = 250.

That is, the number 1005! will end in 250 zeros. It will be divisible by 10^250.

  N = 250

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