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3 years ago

PLEASE HELP ME ASAP!!!!!!

Mathematics

1 answer:

melamori03 [73]3 years ago

3 0

Answer:

Step-by-step explanation:

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Are the expressions 5(x+2)-7 and 5x-5 equivalent

geniusboy [140]

Answer:

Step-by-step explanation:

5x-5 is not equivalent to 5(x+2)-7 because when you multiply out the 5 in 5(x+2)-7 you get 5x+10-7, which simplifies to 5x+3.

5x-5 ≠ 5x+3

7 0

2 years ago

If the ratio of the triangular pyramids' surface areas is 4:9, what is F?

VladimirAG [237]

Answer:

The answer to your question is f = 10.35 in

Step-by-step explanation:

Data

Proportion = 4:9

height 1 = 4.6 in

height 2 = f

Process

1.- Write the proportion

$\frac{4}{4.5} = \frac{9}{f}$

2.- Solve for f

$f(\frac{4}{4.6}) = f(\frac{9}{f})$

$f(\frac{4}{4.6}) = 9$

$4.6\frac{4f}{4.6} = 9(4.6)$

4f = 41.4

$\frac{4f}{4} = \frac{41.4}{4}$

f = 10.35 in

4 0

3 years ago

A nursery has 15 bags of topsoil. Each planter holds 1/8 of a bag.

Svetlanka [38]

Answer:

120 planters can be filled with topsoil.

Step-by-step explanation:

Since each planter can hold 1/8th of a bag of topsoil, this means that one bag of topsoil can fill up 8 planters.

15 x 8 = 120, so this means that 120 planters can be filled with topsoil.

4 0

2 years ago

A pair of shoes that normally sells for $85.00 goes on sale for 35% off.

Andru [333]

Answer:

Step-by-step explanation:

Melanie is correct

85 x 0.35 = 29.75

85 - 29.75 = 55.25

5 0

3 years ago

Read 2 more answers

Triangle PQR has vertices at the following coordinates: P(0, 1), Q(3, 2), and R(5, -4). Determine whether or not triangle PQR is

sweet-ann [11.9K]

The answer is yes, and I will give you the calculation soon

PQ= $\sqrt{3^{2} +1^{2} }$ = $\sqrt{10}$
QR= $\sqrt{ 2^{2} + 6^{2} } =2 \sqrt{10}$
PR= $\sqrt{ 5^{2} + 5^{2} } =5 \sqrt{2}$

$\sqrt{10} ^{2} + (2\sqrt{10}) ^{2} =(5 \sqrt{2} )^{2}$

7 0

3 years ago

Read 2 more answers