3 years ago

I need help understanding this!!!!

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

The answer is 7.0 in. because half of 49 is 7 and 7 time 7 is 49.

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Need an explanation and answer for -25/28 ÷ (5/4)

lyudmila [28]

Answer:

-5/7

Step-by-step explanation:

When you divide fractions, you flip the second fraction, then multiply.

So it becomes -25/28 x 4/5.

This equals -100/140 which reduces to -5/7.

5 0

3 years ago

17. Tina runs at a rate of 8 miles per hour. At that rate,

hram777 [196]

Answer:

1.6 miles

Step-by-step explanation:

60/12=5

which will mean 1/5=.2

.2x8=1.6 miles

6 0

3 years ago

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3x − 2y = 18<br> y = 2x − 13

jenyasd209 [6]

Answer:

x = - 8

3x - 2y = 18 is the same as 3x - (2x - 13 times 2) = 18

Then I used an algebra site for the rest.

It should be x = - 8

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2 years ago

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The ratio of the measures of the three angles in a triangle is 9:3:6.

Alex

Step-by-step explanation:

this is how you solve it :)

5 0

2 years ago

Which is the equation of the parabola?

Umnica [9.8K]

Answer: $y=-\dfrac{1}{8}(x - 2)^2 - 3$

<u>Step-by-step explanation:</u>

The vertex form of a parabola is: y = a(x - h)² + k where

(h, k) is the vertex
$a=\dfrac{1}{4p}$

NOTE: p is the distance from the vertex to the focus

The vertex (h, k) is (2, -3)

$p=-2\quad \implies\quad a = \dfrac{1}{4(-2)}=-\dfrac{1}{8}$

Insert those values into the vertex formula to get:

$y=-\dfrac{1}{8}(x - 2)^2 - 3$

4 0

3 years ago