MATHEMATICS HIGH SCHOOL

- 4a = 36 find the value of a
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- 4a = 36 find the value of a ​ - 1

Answers

Answer 1
Answer:

Answer:

-9 = a

Step-by-step explanation:

Divide both sides by -4 to isolate a:  a = -36/4 = -9 = a

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Select the correct product of (a + 8)(b + 3)A) ab + 8a + 3b + 24
B) ab + 3a + 8b + 24
C) 11ab
D) 24ab

Answers

) ab + 8a + 3b + 24the correct product of (a + 8)(b + 3)

Answer:

A

Step-by-step explanation:

A motorist traveled 311 miles on 12 gallons of gas. To the nearest tenth, how many miles can the motorist travel on one gallon of gas?

Answers

we know that
by using proportion
(311 miles)/(12 gallons) = (x miles)/(1 gallon) \n x= (31.1)/(12) \n x=25.9 miles

the answer is
25.9 miles
Number of miles that can be traveled on one gallon of gas=311/12
                                                                                           =25.92miles
                                                                                 =25.9miles(to the nearest tenth)

Solve the system of equations by substitution.
X=-4y
X+5y=2

Answers

x= -4y  let this be equation 1
x+5y=2 let this be equation 2

substitute equation 1 in 2

-4y + 5y = 2

y=2

substitute the value of y in equation 1

x= -4y
x= -4(2)
x= -8

Answer:

It's simply:

x = (-8,2)

Phil and Nick are selling fruit for a fundraiser. Customers can buy small and large boxes of tangerines. Phil sold 11 small boxes and 10 large boxes of tangerines for a total of $146. Nick sold 5 small boxes of tangerines and 12 large boxes of tangerines for a total of $126. Write the systems of equations.
What is the cost of a large box of tangerines?

Answers

Answer:

11s + 10l = 146

5s + 12l = 126

$8

Step-by-step explanation:

Let :

Small box = s

Large box = l

11s + 10l = 146 - - - - (1)

5s + 12l = 126 - - - - (2)

Multiply (1) by 5 ; (2) by 11

55s + 50l = 730

55s + 132l = 1386

Subtract

-82l = - 656

l = 8

11s + 10(8) = 146

11s + 80 = 146

11s = 66

s = $6

Hence, the price of a large box of tangerine = $8

A football team gained 9 yards on the first play, lost 5 on the second play, lost 7 on the third play and gained 4 on the last play. What integer represents the total yards

Answers

Answer:

1

Step-by-step explanation:

First play=9

Second play=5

Third pla=7

Fourth play=4

9-5-7+4

=1

Find the value of x in the equation √ x + 5 = √ x + 45.

Answers

√x+5 = √x+45
 
(√x+5)^2 = x+45 
x+25+10√x = x+45 
25+10√x = 45 
10√x = 20 
√x=2 
x=4
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