3 years ago

Please help my with this math questions

1 answer:

4 0

Y=50x+550

This is a linear equation of the form:

y=mx+b, where m=rate of change or slope and b=y-intercept.

The slope is the rate of change and the y-intercept is the value of y when x=0, which is the initial value. So in this context...

The change per week is $50.

The starting amount was $550

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Please help. I don’t remember how to do this.

PSYCHO15rus [73]

Answer:

1.5 hours

Step-by-step explanation:

65% ---- 1 hour

1% ---- 1/65 hours

100% ---- 1/65 ×100 = 1.5 hours (nearest half-hour)

4 0

3 years ago

What is -3/8 divided by 7/12<br> A. -32/7<br> B.-14/9<br> C. -9/14<br> D. -7/32

Helga [31]

To divide fractions, you flip the second one and multiply them so it would be:
(-3/8) / (7/12)
-3/8 * 12/7
-36/56
This can be simplified to :
-9/14
Because you divide both the numerator and denominator by 4.

Hope this helps :)

5 0

4 years ago

JK has endpoints J(−5,4) and K(7,−10). Identify the coordinates of the midpoint of JK. Please help!!

sesenic [268]

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
J(\stackrel{x_1}{-5}~,~\stackrel{y_1}{4})\qquad
K(\stackrel{x_2}{7}~,~\stackrel{y_2}{-10})
\qquad
\left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
\left( \cfrac{7-5}{2}~~,~~\cfrac{-10+4}{2} \right)\implies \left( \cfrac{2}{2}~~,~~\cfrac{-6}{2}\right)\implies (1,-3)$

4 0

3 years ago

Factor the following polynomial completely. Start by getting the GCF of the polynomial. 2x^3-18x

Vesna [10]

Answer:

GCF: 2x

Factored: 2x(x+3)(x-3)

Step-by-step explanation:

6 0

3 years ago

Camila wants to save up $350 for a new phone .She already has $128.85 saved up and she plans to put away $22.25 per week until s

TEA [102]

Answer:

10 weeks

Step-by-step explanation:

350 - 128.85 = 221.15

221.15/ 22.25= 9.9

So 10 weeks

8 0

3 years ago

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