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3 years ago

6

Please do not guess I have to answer this correctly! Please make sure you notice all the symobols!!

2 answers:

oee [108]3 years ago

8 0

Answer:

5 a - 7 b + b ^ 2 = -15

Step-by-step explanation:

Evaluation of the expression for a = - 1 and b = 5.

5 a - 7 b + b ^ 2,

Putting the values in expression,

= 5 a - 7 b + b ^ 2,

= 5 ( - 1 ) - 7 ( 5 ) + ( 5 ) ^ 2,

= - 5 -35 + 25,

= - 40 + 25,

= -15

Yanka [14]3 years ago

5 0

5 x (-1) - 7 x 5 + 5^2
-5 - 35 +25
-40 + 25
= -25

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Which algebraic expression represents the phrase below? five times the sum of a number and eleven, divided by three times the su

Umnica [9.8K]

The phrase has two parts:

Five times the sum of a number and eleven, divided by three times the sum of the number and eight

Let the number be x. Five times the sum of a number and eleven means 5 multiplied to the sum of x and 11. In expression this will be written as:

5(x + 11)

Three times the sum of the number and eight means 3 multiplied to the sum of x and 8. In expression this will be written as:

3(x + 8)

So, the overall expression will be:

$\frac{5(x+11)}{3(x+8)}$

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3 years ago

Use the dimensions shown above to find the volume of each candle to the nearest hundredth. Complete the table.

Kaylis [27]

Answer:

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5 0

3 years ago

Add to check 512,274-96,473

HACTEHA [7]

Answer:

415,801

Step-by-step explanation:

415,801 + 96,473 = 512,274

5 0

3 years ago

The perimeter of a rectangular rug is 40 ft. It's length is 12 ft. What is it's width?

Alexus [3.1K]

Answer:

<h2>The answer is 8 ft</h2>

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

where

l is the length

w is the width

From the question

perimeter = 40 ft

length = 12 ft

Substitute the values into the above formula and solve for the width

That's

40 = 2(12) + 2w

40 = 24 + 2w

2w = 40 - 24

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Divide both sides by 2

We have the final answer as

<h3>8 ft</h3>

Hope this helps you

4 0

3 years ago

Which situation represents a proportional relationship?

lyudmila [28]

Answer:

D. The cost of purchasing avocados for $1.75 per pound plus a shipping fee of $0.16 per pound.

Step-by-step explanation:

A linear relationship is of the form $y=mx+b$ , where, $m$ is the unit rate and $b$ is the fixed value (constant).

For a proportional relationship, the value of $b=0$ and thus it is of the form $y=mx$

Let us check each option and express it in the form above.

Option A:

Given:

Unit rate of purchasing a basket of apples, $m=\$ 1.25$

Fixed price for the basket, $b=\$ 5$

Since, $b \ne 0$ , therefore, it is not a proportional relationship.

Option B:

Given:

Unit rate of purchasing a banana, $m=\$ 5$

Fixed price for the box, $b=\$ 3$

Since, $b \ne 0$ , therefore, it is not a proportional relationship.

Option C:

Given:

Unit rate of purchasing a lime, $m=\$ 0.65$

Discount from total cost, $b=\$ 1$

Since, $b \ne 0$ , therefore, it is not a proportional relationship.

Option D:

Given:

Unit rate of purchasing an avocado = $\$ 1.75$

Unit rate of shipping = $\$ 0.16$

Therefore, total cost per pound is the sum of the unit rates of purchasing and shipping. So,

Total cost of avocados per pound, $m=1.75+0.16=\$ 1.91$

There is no fixed cost on this. So, $b=0$

Since, $b = 0$ , therefore, it is a proportional relationship.

Therefore, the correct option is D.

6 0

3 years ago