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4 years ago

28x-30=140-6x solve for x

Mathematics

1 answer:

lisabon 2012 [21]4 years ago

6 0

Answer:

x=5

Step-by-step explanation:

You would first add 6x to both sides to get the equation 34x-30=140. You would then add 30 to both sides and get that 34x=170. You would then divide 170 by 34 and get that x=5.

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Zachary bought 8 hot dogs at the fair. He paid a total cost of $12.00 for the food. Find the unit cost of one hot dog.

masya89 [10]

Answer:.66

Step-by-step explanation:

You divide 8 and 12

3 0

4 years ago

Read 2 more answers

the spinner is divided in to 8 equal sections. if the arrow lands on a number, what is the probability that it will land on a 1

Tcecarenko [31]

25% there are 8 sections and there are two you are trying to land on making it 2/8=25%

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3 years ago

Help me please solve the circled question show your work

Rasek [7]

Part 1) Use the fact that there are 12 inches in a foot

a) How many inches tall is a 7 foot basketball player?

we know that

1 foot=12 inches

so by proportion

$\frac{12}{1} \frac{inches}{foot} =\frac{x}{7} \frac{inches}{feet} \\ \\x=12*7\\ \\x=84\ inches$

therefore

the answer Part 1a) is

$84\ inches$

Part b) If a yard is a 3 feet long, how many inches are in a yard?

we know that

1 yard=3 feet

1 foot=12 inches

Convert 3 feet to inches

by proportion

$\frac{12}{1} \frac{inches}{foot} =\frac{x}{3} \frac{inches}{feet} \\ \\x=12*3\\ \\x=36\ inches$

therefore

the answer Part 1b) is

$36\ inches$

Part 2) At the farmer's market two pounds of peaches cost $4.20 How much will five pounds cost?

by proportion

$\frac{4.20}{2} \frac{\$}{pounds} =\frac{x}{5} \frac{\$}{pounds} \\ \\2*x=4.2*5\\ \\x=4.2*5/2=\$10.5$

therefore

the answer Part 2) is

$\$10.5$

Part 3) Janice mother gave her a ten dollars bill to buy five pounds each of bananas and apples at the grocery store. When she got there she found that bananas were 80 c per pound and apples were $1.40 per pound.

Did Janice's mother give her enough money? If so, should she receive any change? If not, how much more money does she need?

we know that

Find the cost of the bananas

$5\ pounds*0.80\frac{\$}{pounds}=\$4$

Find the cost of the apples

$5\ pounds*1.40\frac{\$}{pounds}=\$7$

Sum the cost of the bananas and the cost of the apples

$\$4+\$7=\$11$

$\$11 > \$10$ ------> Janice's mother didn't give her enough money

She needs more money

She needs-------> $\$11-\$10=\$1$

therefore

the answer part 3) is

She needs $\$1$ more

3 0

3 years ago

Can someone help with this

dimaraw [331]

Hey There! :)

Solve for g.
$g/20=12/48
$
Isolate the variable; Multiply both sides by 20.
$(g/20)*20=(12/48)*20$
$g=240/48$
$g=5$

Hope this helps.
-Benjamin

6 0

3 years ago

8 students in Mr. Webb's class got an A on the exit ticket. There are 25

zimovet [89]

Answer:

32%

Step-by-step explanation:

To find the percentage, we have to multiply 25 and 8 by 4.

25x4 = 100

8x4 = 32

So, 8 out of 25 is 32%.

8 0

3 years ago