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3 years ago

Simplify 3-2y+(-8y) + 8.5.

Mathematics

1 answer:

Jlenok [28]3 years ago

7 0

Answer:

=−10y+11.5

Step-by-step explanation:

Let's simplify step-by-step.

3−2y−8y+8.5

=3+−2y+−8y+8.5

Combine Like Terms:

=3+−2y+−8y+8.5

=(−2y+−8y)+(3+8.5)

=−10y+11.5

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What is the value of m in the equation one-half m minus three-fourths n equals 16, when n equals 8? a. 20 b. 32 c. 44 d. 48

Semmy [17]

Answer:

c. 44

Step-by-step explanation:

½m - ¾n = 16

½m - (¾×8) = 16

½m - 6 = 16

½m = 16 + 6

½m = 22

m = 44

4 0

3 years ago

Can someone help me on number 22, Thanks!!!

elena-14-01-66 [18.8K]

Answer: i dont know the answer right now but i know how to find it

Step-by-step explanation:

multiply 272.5 by 1,000

7 0

4 years ago

Read 2 more answers

a rectangular prism is 5 meters long, 17 meters wide, and 4 meters high. what is the surface area of the rectangular prism?

Mars2501 [29]

The surface area of rectangular prism is 346 square meters.

Given the figure is rectangular prism.

We know that the surface area of rectangular prism with length L, width W and height H is = 2(LW+WH+LH)

Given that the length of prism = 5 m

Width of prism = 17 m

Height of prism = 4 m

So the total surface area of the rectangular prism is given by,

= 2 [5*17 + 17*4 + 4*5]

= 2 [85 + 68 + 20]

= 2*173

= 346 square meters

Hence the surface area of rectangular prism is 346 square meters.

To know more about Rectangular Prism refer to:

brainly.com/question/24284033

#SPJ4

8 0

1 year ago

In △XYZ , XZ=9 , YZ=4 , and XY=7 .

Mamont248 [21]

Answer:

$A=6\sqrt{5}\ units^2$

Step-by-step explanation:

we know that

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.

$A=\sqrt{s(s-a)(s-b)(s-c)}$

where

a, b and c are the length sides of triangle

s is the semi-perimeter of triangle

we have

$a=9\ units,b=4\ units,c=7\ units$

Find the semi-perimeter s

$s=\frac{9+4+7}{2}=10\ units$

Find the area of triangle

$A=\sqrt{10(10-9)(10-4)(10-7)}$

$A=\sqrt{10(1)(6)(3)}$

$A=\sqrt{180}\ units^2$

Simplify

$A=6\sqrt{5}\ units^2$

8 0

3 years ago

10. A student studied 18 hours in 7 days, if he wants to study average 2 hours each day for 14 days. How many hours he needs to

Daniel [21]

14 hours, you just need to multiply your average with the next 7 days and it will be 14 hours.

6 0

3 years ago