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3 years ago

Need done ASAP please and thank you

Mathematics

1 answer:

BaLLatris [955]3 years ago

6 0

Answer:

Step-by-step explanation:

5x + x + 18 = 90

collect like terms:

5x + x = 6x ( when an x alone imagine a 1 infront of it)

solve:

6x + 18 = 90

90 - 18 = 72

6x = 72

72 ÷ 6 = 12

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Solve for x on both problems! please help! will give brainiest

Fudgin [204]

Answer: # 15 is x=-12 and #16 is x=24

Step-by-step explanation:

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3 years ago

you pay $14.82 for 1.5 pound of ham. you buy 2.25 pounds of roast beef for $12.40 per pound. How much less does ham cost per pou

Vesnalui [34]

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4 years ago

zepelin [54]

Answer:

The required equation is: $\mathbf{f(x)=\frac{3}{4}x-\frac{29}{4}}$

Step-by-step explanation:

We need to find equation from the table given

x f(x)

3 -5

7 -2

11 1

15 4

We can write equation in the form of $y=mx+b$

where m is slope and b is y-intercept.

Finding Slope

We can used the slope formula to find slope: $Slope=\frac{y_2-y_1}{x_2-x_1}$

From the table we have: $x_1=3, y_1=-5, x_2=7, y_2=-2$

Putting values and finding slope

$Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{-2-(-5)}{7-3} \\Slope=\frac{-2+5}{7-3}\\Slope=\frac{3}{4}$

So, we get slope $m=\frac{3}{4}$

Now, finding y-intercept

Using the slope $m=\frac{3}{4}$ and point (3,-5) we can find y-intercept

$y=mx+b\\-5=\frac{3}{4}(3)+b\\-5=\frac{9}{4}+b\\b=-5-\frac{9}{4}\\b=\frac{-5*4-9}{4}\\b=\frac{-20-9}{4}\\b=\frac{-29}{4}$

The y-intercept is $b=\frac{-29}{4}$

So, the equation having slope $m=\frac{3}{4}$ and y-intercept $b=\frac{-29}{4}$ will be:

$y=mx+b\\y=\frac{3}{4}x-\frac{29}{4}$

The required equation is: $\mathbf{f(x)=\frac{3}{4}x-\frac{29}{4}}$

6 0

3 years ago

the length of a rectangle is 9 inches more than the width. the perimeter is 54 inches. Find the length and width of the rectangl

Keith_Richards [23]

W is width W+9 is length W+W+9=54 2w=45 45/2 W=22.5 Width is 22.5 length is 31.5

7 0

3 years ago

Simplify the expression

kow [346]

Answer:

Step-by-step explanation:

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4 0

3 years ago