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kvasek [131]
2 years ago
15

Write the phrase as an expression. Then evaluate the expression when y=20.

Mathematics
1 answer:
erica [24]2 years ago
3 0

Answer: Evaluate 2x2−3x+8 when x=−4 .

Substitute −4 for x. 2(−4)2−3(−4)+8

Simplify exponents. 2(16)−3(−4)+8

Multiply. 32−(−12)+8

Subtract. 44+8

Add. 52

Now we can evaluate expressions that include multiplication and division with integers. Remember that to evaluate an expression, substitute the numbers in place of the variables, and then simplify.

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100 Points
UNO [17]
<span>1) Write the equation in slope intercept form if 

Slope=3/5 and intercept is 2
y = mx + b
m = 3/5 and b = 2
so

</span><span>equation in slope intercept 
</span><span>y = 3/5(x) + 2

</span><span>2. Find the x intercept of the line 5x-2y=10

x intercept when y = 0
so
</span>5x-2y=10
5x-2(0)=10
5x = 10
  x = 2

answer
x intercept (2 , 0)

hope it helps
6 0
3 years ago
Read 2 more answers
Clark and his brother kent played floor hockey in their living room. Each goal was worth 2 points. Clark scored 6 points. Kent s
Schach [20]

Answer:

7 Goals

Step-by-step explanation:

6 divided by 2 equals 3, So Clark scored 3 goals. 8 divided by 2 equals 4, So Kent scored 4 goals. 4 plus 3 equals 7.

5 0
3 years ago
when the driver is in the empty truck, the mass is 2948.35 kilogram. the mass of 1 box of paper is 22.5 kilograms. the driver de
marishachu [46]

Answer:

  0 boxes minimum

Step-by-step explanation:

The mass of the truck and paper must satisfy ...

  22.5b + 2948.35 ≤ 4700 . . . . total truck mass cannot exceed bridge limits

  22.5b ≤ 1751.65

  b ≤ 77.85

The driver can take a minimum of 0 boxes and a maximum of 77 boxes of paper over the bridge.

_____

The question asks for the <em>minimum</em>. We usually expect such a question to ask for the <em>maximum</em>.

7 0
3 years ago
!!!!HELP ME PLZZZZZZZZZZZZZ
Zolol [24]

Answer:

2) Yes

3) No

4) Yes

5) 2x + 8

6) 5(x - 8)

7) 3x + 21

Hope this helps :)

5 0
3 years ago
Margaret’s bottle of shampoo is 7/8 full. She uses 1/3 of the shampoo in the bottle to wash the dog. Estimate what fraction of s
AleksandrR [38]

Fraction of shampoo left = \frac{13}{24}

Solution:

Given fraction of full shampoo  =\frac{7}{8}.

Fraction of shampoo Margaret used  =\frac{1}{3}

Fraction of shampoo left = Full shampoo – fraction of shampoo used

                                          =\frac{7}{8}-\frac{1}{3}

To make the denominators same do cross multiplication.

                                          =\frac{7\times3}{8\times3}-\frac{1\times8}{3\times8}

                                          =\frac{21}{24}-\frac{8}{24}

                                          =\frac{21-8}{24}

                                          =\frac{13}{24}

Hence \frac{13}{24} of the shampoo bottle is left.

8 0
3 years ago
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