I need help this is due Monday

Mathematics

2 answers:

ASHA 777 [7]3 years ago

8 0

1. 259
2. 80
3. 5316
4. 5
5. 2524

Korolek [52]3 years ago

8 0

1. 259 in
2. 80 ft.
3. 5,316 ft.
4. 5 ft.
5. 2,524 in.

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What is 8/2(2+2) equal to?

Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

what a tricky question.

pemdas- parenthesis, exponents, multiplication, division, addition, subtraction.

8/2(2+2)

add parenthesis first

8/2(4)

then multiply / distribute

2(4) is 8

finally

8/8 is 1

4 0

3 years ago

Y varies inversley with x y= 0.5 x= 3 what is the value of k the constant of inverse variations

umka2103 [35]

Y varies inversely with x
y = k/x

when y = 0.5, x = 3
0.5 = k/3
k = 0.5 x 3 = 1.5

k = 1.5

y = 1.5/x or y = 3/2x

7 0

4 years ago

3y+10x-54=0 5y-2x-34=0<br><br> x=<br><br> y=

Blababa [14]

<h3>Answer:</h3><h2>x = 3 and y = 8 → (3, 8)</h2><h3>Step-by-step explanation:</h3>

$\left\{\begin{array}{ccc}3y+10x-54=0&\text{add 54 to both sides}\\5y-2x-34=0&\text{add 34 to both sides}\end{array}\right\\\left\{\begin{array}{ccc}3y+10x=54\\5y-2x=34&\text{multiply both sides by 5}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3y+10x=54\\25y-10x=170\end{array}\right}\ \ \ \ |\text{add both sides of the equations}\\.\ \ \ \ \ 28y=224\qquad\text{divide both sides by 28}\\.\ \ \ \ \ \ \ \dfrac{28y}{28}=\dfrac{224}{28}\\.\ \ \ \ \ \ \ \boxed{y=8}$

$\text{put the value of y to the first equation}\\\\3(8)+10x=54\\24+10x=54\qquad\text{subtract 24 from both sides}\\24-24+10x=54-24\\10x=30\qquad\text{divide both sides by 10}\\\dfrac{10x}{10}=\dfrac{30}{10}\\\boxed{x=3}$