MATHEMATICS MIDDLE SCHOOL

The cost of 3 pizzas and 4 sandwiches at the deli is $68. The cost of 3 pizzas and 7 sandwiches is $92. Find the cost of one pizza and sandwiches

Answers

Answer 1
Answer: 3p+4s=68 and 3p+7s=92 we can rearrange equation 1 to let 's' be the subject : s=(68-3p)/4. We can then sub this into equation 2 so that there is only one unknown: 3p+7(68-3p)/4=92. Then takeaway p from both sides: 7(68-3p)/4=92-3p. Then multiply by 4: 7(68-3p)= 4(92-3p). The use distributive law on both sides: 476-21p=368-12p. Then rearrange to get 108=9p and the divide by 9 and you will get p=12 Hope this helps!!

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a + 5 = 1 over 5 (15 + 5a)

Answers

There are no solutions for this problem.

Does 4/8 +7/8=11/16 or 11/8

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that's easy it is 11/8 because 4+7=11 8 will be the same
The answer would be 11/8 because 7+4=11 and then the denominator(8) will stay the same.

Why are SI units helpful for describing objects? A.
SI units make more sense than English units.





B.
SI units are standardized and understood globally.





C.
SI units are understood to be a sign of scientific accuracy.





D.
SI units are more reliable

Answers

the answer is C they are more accurate

What fractions are equivalent to 4/7

Answers

Some of the fractions that are equivalent to 4/7 are 8/14, 12/21, 16/28, 20/35 e.t.c

What is equivalent expression?

Equivalentexpressions are expressions that work the same even though they look different.

If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

For example , 5 × 4 = 20 and 2 × 10 = 20 , so the two expressions are equivalent and they have thesame value

To find the equivalent of 4/7, we can multiply through by a factor of 2, 3 , 4 ,5 e.t.c

Therefore 4/7 = 8/14 = 12/21 = 16/28 = 20/35

learn more about equivalent expressions from

brainly.com/question/2972832

#SPJ6

8/14 12/21 16/28 these are some of the fractions that came to mind

Ingrid walked her dog and washed her car . She spent 3 times as much time washing her car as she did walking her dog. it took Ingrid 1 1/2 hours to wash her car .How long did it take Ingrid ti walk her dog ?

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To figure out long it took for Ingrid to walk her dog,multiply 3*1 and 1/2 or 3*1.5 to get 4.5 hours or 4 and 1/2 hours.

HOW DO YOU DO THIS PLZ

Answers

8. 24

11. 11(x+5)

are the answers

8+16= 24

2(4+8)


11x+55

= 11(x+5)


I hope that's help:0
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