can u help me with all the questions​

Answer: A

Step-by-step explanation:

[tex]x^2+2x+1-y^2\\\\=(x+1)^2-y^2\\\\=((x+1)-y)((x+1)+y)\\\\=(x+1-y)(x+1+y)\\\\Answer\ A\\[/tex]

Answer:

soln

Step-by-step explanation:

a=7

b=-2

5a-3b

5×7-3×-2

35+6(because - and - becomes+

41ans

Answer:

5a-3b

5×7-3×-2

35-6

29

I think soo

Answer:

0.0089

Step-by-step explanation:

i dont know how to show my work i did it online, pls give me brainliest :(

Fun Fact: Octopuses lay 56,000 eggs at a time

Answer:

7 x 9 = 63 7 is a FACTOR of 63

9 is a FACTOR of 63

7 and 9 are even DIVISORS of 63

63 is a MULTIPLE of 7 and 9

63 is a PRODUCT of 7 and 9

63 is evenly DIVISIBLE by 7 or 9

Writing 63 as a product of as many factors will be: 7 × 9, 3 × 21, 9 × 7 and 21 × 3.

The factors of 63 include 1, 3, 7,9, 21 and 63.

Since we've been given the information that we should not use 1 as a factor when multiplying according to the question, then the 63 as a product of its factors will be:

3 × 21 = 63

7 × 9 = 63

9 × 7 = 63

21 × 3 = 63

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https://brainly.com/question/22067581

Hey there! I'm happy to help!

We see that this is an isosceles triangle. This means that two sides are the same length. . We can see that the sides DE and EF are marked with two orange lines, which shows that they are congruent.

We want to find the measure of angle D. We see that our two lines of equal length both create an angle with the hypotenuse DF. Since these lines are the exact same length, they are going to have to create the same angle. Even if you just eyeball it, the angles look to be the same.

So, our measure of angle D is going to be the same as angle F. Let's call this measure m and put it into an equation.

2m+92=180 (sum of all angle measures in a triangle is 180)

Subtract 92 from both sides.

2m=88

Divide both sides by 2

m=44

So, the measure of angle D is B. 44°.

Have a wonderful day and keep on learning! :D

Recall that

• tan(x) = sin(x) / cos(x)

• sin(x) sin(y) = - 1/2 (cos(x + y) - cos(x - y))

• cos(x) cos(y) = 1/2 (cos(x + y) + cos(x - y))

Then we can write

tan(6x) tan(7x) = (sin(6x) sin(7x)) / (cos(6x) cos(7x))

tan(6x) tan(7x) = - (cos(13x) - cos(x)) / (cos(13x) + cos(x))

Make this replacement in the original equation and simplify:

tan(6x) tan(7x) = -1

- (cos(13x) - cos(x)) / (cos(13x) + cos(x)) = -1

(cos(13x) - cos(x)) / (cos(13x) + cos(x)) = 1

cos(13x) - cos(x) = cos(13x) + cos(x)

2 cos(x) = 0

cos(x) = 0

Solving for x gives

x = π/2 + nπ = (2n + 1)π/2

where n is any integer. However, since 2n + 1 is odd, for any odd multiple of π/2, we would end up with

tan(6 (2n + 1)π/2) = tan((2n + 1)×3π) = tan(odd multple of π/2)

since odd×odd = odd, and cos(odd multiplie of π/2) = 0, which would make tan(6x) undefined.

Therefore there are no solutions to this equation.

Answer:

I hope this answer will help you

a)42+(-17) b)8-(-9) c)8(-9) d)-42+(-7)

=42-17 =8+9 =(-72) =-42-7

=25 =17 =-49

e)-2(-3)(-4) f)-18-7 g)(-5)^2 h)-5^2

=-2*12 =-25 =25 =25

=24

i)ans

7

The best unit for measuring the distance between two cities is kilometer.

Answer:

=(-4+7)/2

=3/2

=1.5 answer

Answer:

100

Step-by-step explanation:

x=100

bcz vertically opposite angles

Answer:

z = -3

Step-by-step explanation:

42 = -7 ( z-3)

42 = -7z + 21

21 = -7z

z = -3

Answer and Step-by-step explanation:

We have to solve for z. That means everything that is next to z has to move to the other side of the equation.

First, divide -7 from both sides of the equation.

-6 = z - 3

Now add 3 to both sides of the equation.

-3 = z

z is equal to -3.

#teamtrees #PAW (Plant And Water)

I hope this helps!

Answer:

8

Step-by-step explanation:

The absolute value of |x| is x

-x = -8

Distribute the - on the other side but since two negatives make a positive:

- and - = +

x = 8

Hope this helped.

Answer:

y-intercept is (0, -8)

Step-by-step explanation:

[tex]y = {x}^{2} + 2x - 8[/tex]

At y-intercept, x is zero

substitute x as zero:

[tex]y = {(0)}^{2} + 2(0) - 8 \\ y = 0 + 0 - 8 \\ y = - 8[/tex]

Answer:

4800

Step-by-step explanation:

80 × 60 = 4800

Answer:

It’s 48 just do 8*6=48 I don’t know how I got that answer but Ik it’s right lol

Answer:

How many mg are there in a 5.00 grain aspirin tablet ? 1 grain = 0.00229 oz . there are 454 g/lb

Answer:

141

2Step-by-step explanation:

Answer:

48 2/3

Step-by-step explanation:

Remember,

Absolute value of a +ve number = +ve

Absolute value of a -ve number = +ve

Absolute value of 48 2/3 = 48 2/3

Answer:

< then >

Step-by-step explanation:

11 7/8 can be written as (11 + 7/8). If we find (11+7/8)², we know that √(11+7/8)² = (11+7/8), so we can compare (11+7/8)² with 129 and see which is bigger.

(11+7/8)² = (11+7/8) * (11+7/8)

= 121 + 7/8 * 11 + 7/8 * 11 + (7/8)²

= 121 + 77/8 + 77/8 + (7/8)²

77/8 is greater than 9 (8*9 = 72) but less than 10 (8*10=80). Rounding down to 7, we have

121 + 7 + 7 + (7/8)²

= 135 + (7/8)²

Even when rounding down, (11+7/8)² is greater than 129. Therefore,

129 < (11+7/8)²

square root both sides

√129 < (11+7/8)

We can apply a similar process for the next one.

(3+5/6)² = (3+5/6) * (3+5/6)

= 9 + 5/6 * 3 + 5/6 * 3 + (5/6)²

= 9 + 15/6 + 15/6 + (5/6)²

15/6 is less than 3 (6*3 = 18) but greater than 2 (6*2 = 12). Rounding down to 2, we have

9 + 2 + 2 + (5/6)²

= 13 + (5/6)² > 10

Even when rounding down, (3+5/6)² is greater than 10

(3+5/6)² > 10

square root both sides

(3+5/6) > √10

Answer:

Step-by-step explanation:

Inverse variation equation:

We have:

Work out the value of k by substituting the values of x and y:

The equation is:

Answer:

y = -6/x

Step-by-step explanation:

y varies inversely as x

So, y = k/x, where k is the constant of proportionality.

If y = -1 when x = 6,

Then, -1 = k/6 ===> k = -6

Therefore, y = -6/x

Answer:

24 is the answer. Hope it helps you! Stay blessed.

Hope this help! Everything is in the picture!

Answer:

$471.60

Step-by-step explanation:

The double time rate is not specified in the question. But I will assume it's 2 times the normal rate. Therefore...

13.10 x 20 + 8 x (13.10 x 2)

Answer = $471.60

Answer:

v=-155

Step-by-step explanation:

167 = 12 - v

subtract both sides by 12

155= -v

multiply both sides by -1

-155= v

Hello ;)

We have :

Claude's net pay → $985.50

Claude's gross pay → $1350.00

We know that the gross pay represents 100 % of the salary.

So :

$1350.00 ⇔ 100 %

$985.50 ⇔ ? %

? = 985.5 × 100 ÷ 1350 = 73 %

Claude's net pay is 73 % of the gross pay.

:-)

Based on his net pay being $985.50 and his gross pay being $1,350.00, the net pay is 73% of the gross pay.

To find out how much of the percentage of something a variable is, you make the variable the numerator and the other measure the denominator.

In this instance that would be:

= Net pay / Gross pay x 100%

= 985.50 / 1,350 x 100%

= 73%

In conclusion, the net pay is 73% of the gross pay.

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9514 1404 393

Answer:

  √35 +3√7 -6 . . . square units

Step-by-step explanation:

The area can be figured a number of ways. The figure can be divided into parts, and the areas of those parts added.

Or, the area of the enclosing rectangle can be found, and the rectangle at upper right that is not shaded can be subtracted from that. We choose the latter.

The overall width is the sum of the given partial widths:

  width = (√7 -2) + (2) = √7

Then the area of the bounding rectangle is ...

  A = LW = (√5 +3)(√7) = √35 +3√7

The area of the upper right empty-space is ...

  A = LW = (3)(2) = 6

Then The area of the shaded figure is ...

  √35 +3√7 -6

I wrote it roughly.

Hope it helps.

I am sorry.

Answer:

1 look pic

2 1/75

3 21/75 = 7/25

Step-by-step explanation:

hope it help