Which expression is equivalent to a + a"?
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Answer:

Positive integers have values greater than zero.

Negative integers have values less than zero.

Zero is neither positive nor negative.

Step-by-step explanation:

Answer: if they have got - before them or if the say negative

Step-by-step explanation:

Answer:

k < 4

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 ( a ≠ 0 )

Then the discriminant Δ = b² - 4ac informs us about the nature of the solutions.

• If b² - 4ac > 0 then 2 real and distinct solutions

• If b² - 4ac = 0 then 1 real and repeated solution

• If b² - 4ac < 0 then no real solutions

4x² + 8x + k = 0 ← is in standard form

with a = 4, b = 8 , c = k , then

b² - 4ac = 8² - (4 × 4 × k) = 64 - 16k

For two real solutions

64 - 16k > 0 ( subtract 64 from both sides )

- 16k > - 64

Divide both sides by - 16, reversing the symbol as a result of dividing by a negative quantity.

k < 4

Then any value less than 4 will ensure the equation has two real solutions

Answer:

3*(d + r^2)

Step-by-step explanation:

Sometimes you read what is needed from front to back and other times it goes from back to front. This is one of those things that goes from back to front.

d and r^2 = d + r^2  In this case and means plus.

Now you deal with the three.

3(d + r^2) which creates the distributive property.

Answer:

3*(d + r^2) is correct answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

1. If A is a subset of B and B is a subset of A then A and B must be equal.

2. The subsets of {a,b,c} are

{ } (emptyset}, {a}, {b}, {c}, {a,b}, {a,c}, {b,c}, {a,b,c}

3} Since {a,b,c,d,e,f} has 6 elements then there are [tex]2^6[/tex] subsets.

9514 1404 393

Answer:

  total: 2.85 hours = 2 17/20 hours

Step-by-step explanation:

Strategy: convert all fractions to decimals, determine weeding and mowing times, and add the three times to find the total.

  3/4 = 0.75

  1/5 = 0.2

Solution:

raking time: 0.75 hours

weeding time: 0.75 +0.2 = 0.95 hours

mowing time: 0.95 +0.2 = 1.15 hours

__

Total time: 0.75 +0.95 +1.15 = 2.85 hours = 2 17/20 hours

_____

Additional comment

You may recognize that 0.95 is the middle of three equally-spaced values. Then the total will be 3×0.95 = 2.85 hours.

Answer:b

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

The ratio of purple flowers to total flowers is 16 to 21 is NOT TRUE because your total is already 21 so it would make no sense for 16 to be in the ratio

Answer:

-16/5

Step-by-step explanation:

7(x+1)=1-2(5-x)

7x+7=1-10+2x

7x-2x=1-10-7

5x = -16

x = -16/5

Answer: [tex]\huge {x = -\frac{16}{5} }[/tex]

Step-by-step explanation:

Given equation

7 (x + 1) = 1 - 2 (5 - x)

Expand parentheses and apply the distributive property

7x + 7 = 1 - 10 + 2x

Combine like terms

7x + 7 = -9 + 2x

Subtract 2x on both sides

7x + 7 - 2x = -9 + 2x - 2x

5x + 7 = -9

Subtract 7 on both sides

5x + 7 - 7 = -9 - 7

5x = -16

Divide 5 on both sides

5x / 5 = -16 / 5

[tex]\boxed{x=-\frac{16}{5} }[/tex]

Hope this helps!! :)

Please let me know if you have any questions

Answer:

8.3100 x [tex]10^{4}[/tex]

Explanation:

83100 in this form would be 8.3100 x [tex]10^{4}[/tex] because you can see 4 digits after the decimal point which would be raised to the 4th power of 10.

Answer:

28/5

plsss mark me brainliestt

Step-by-step explanation:

5.6=56/10

28/5

Answer:

your fractions will go in order of 1/4, 2/5, 5/8, 4/6

Step-by-step explanation:

a. 2/5 < 1/2 and 4/6 > 1/2 so 2/5 < 4/6

b. 5/8 > 1/2 and 1/4 < 1/2 so 5/8 > 1/4

c. 4/6 > 1/2 and 4/6 < 2/2 and 5/8 > 1/2 and 5/8 < 2/2 and 5/8  ?? cannot see this

Answer:

3 eighths are needes to make up the rest of the measure.

Step-by-step explanation:

1/4 + 1/4 + 1/ 8 + x = 1

2/4 + 1/8+x=1

4/8 + 1/8+x=1

5/8 + x=1

x=1 - 5/8

x=3/8

We need three eights.(Because 3/8=1/8+1/8+1/8 and 1/8 represents an eights)

Answer:

4hdunzkzmfindudjdkzmd

Answer:

32

35

Step-by-step explanation:

hope this helps :D

Answer:

Estimate and solve:

67+35

89−54

Add 67 and 35.

102

Subtract 54 from 89.

35

List all of the solutions.

67+35=102

89−54=35

Step-by-step explanation:

Hi :)

Radius is half the diameter

4.6 mm (2) = 9.2 mm

The diameter of the circle is 9.2 mm.

Answer: Choice D

Explanation:

This is because all of the exponents are odd for this polynomial. It might help to think of that 4x as 4x^1.

Answer:

12

Step-by-step explanation:

SOLUTION:  

In a right triangle, the sum of the squares of the

lengths of the legs is equal to the square of the length

of the hypotenuse. The length of the hypotenuse is 13

and the lengths of the legs are 5 and x.  

Answer:

66.5 is the answer thanks

Answer:

275 student tickets and 346 adult tickets

Step-by-step explanation:

621-71=550

550÷2=275+71346

Answer:

4.5 / 9 = 1/2

Answer:

y-30

Step-by-step explanation:

If y is decreased by 30, then you are saying y-30.

Answer:

10y + 4

Step-by-step explanation:

-9 + 8y + 12 - (-2y) + 1

-9 + 8y + 12 + 2y + 1

8y + 2y - 9 + 12 + 1

10y + 4

Answer:

11

Step-by-step explanation:

exceed mean how much and the question is asking how much did he get more so yust 19 -8=11

Answer:

x=20°

m=50°

n=68°

p=50°

Step-by-step explanation:

Here,we know that,

i)n=68°[being vertically opposite angle]

ii)p+62°+n=180°[being straight angle]

or, p+62°+68°=180°

or, p+130°=180°

or, p=180°-130°

thus, p=50°

iii) m=p[being vertically opposite angle]

thus, m=50°

iv)(2+3x)°=62°[being vertically opposite angle]

or, 3x°=62°-2°

or, 3x°=60°

or, x=60°÷3°

thus, x=20°

Hence, the value of x=20°, m=50°, n=68° and p=50°.

Answer:

A. 26

Step-by-step explanation:

The base number (the first number) is what will be multiplied and the exponent is how many times you're multiplying the number, so for this it would be

2 x 2 x 2 x 2 x 2 x 2