MATHEMATICS MIDDLE SCHOOL

Zwelibanzi and Jessica are friends. Zwelibanzi takes Jessica’s civil technology test paper and will not tell her what her mark is. He knows Jessica dislikes word problems so he decides to tease her. Zwelibanzi says: : I have 12 marks more than you do and the sum of both our marks are equal to 148. What are our marks?

Answers

Answer 1

Answer:

Answer:

80 and 68

Step-by-step explanation:

Jessica's marks = x

Zwelibanzi's marks = y

We get following equations as per given:

y - x = 12
y + x = 148

Sum up the two equations to substitute x:

2y = 12+148
2y = 160
y = 160/2
y = 80

And finding the value of x:

x = y -12
x = 80 -12
x = 68

Marks are:80 and 68

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What is the 7th term in the sequence below?5, 25, 125, 625, …

A. 78,125
B. 15,625
C. 3,125
D. 825

Answers

Answer:

78,125

Step-by-step explanation:

Plz mark brainliest thanks

Answer:

Ik i'm late, but I am doing this problem rn the answer is 78,125

Step-by-step explanation:

You multiply each number by 5 example: 5 x 5 = 25 x 5 = 125 x 5 = 625 x 5 = 3,125 x 5 = 15,625 x 5 = 78,125

A pencil at a stationery store costs $1, and a pen costs $1.50. Shawn spent $12 at the store. He bought a total of 9 items. Which system of equations can be used to find the number of pencils (x) and pens (y) he bought?

Answers

x= 3 pencils 3+6=9 items
y= 6 pens
So, Shawn bought 3 pencils and 6 pens. 1 pen equals 1.50 and a pencil only costs a dollar and he spent 12 dollars so now if he bought 6 pens and 3 pencils that would equal 12.

9x=£9. 9y=13.50. It has to be an even number of y or you will get a decimal and 12 is not a decimal. 7x+2y=£10 5x+4y=£11. 3x+6y=£12 The answer is three pencils and 6 pens.

Why are tenths called tenths

Answers

Answer:

No matter the number, the tenths place is the first to the right of the decimal point. In numbers with no decimal point, the tenths place is zero.

Step-by-step explanation:

Answer:

Because it is a tenth of one whole

Step-by-step explanation:

When one is divided by ten, it is called a tenth, a piece of a whole

75dollars with a 10 percent sales tax

Answers

with a 10 percent tax, you have 90 percent left. 75*.9=$67.50

10% of an item purchased at $75 is equal to $7.5 you will pay $67.5

What is 20% of 120 and how do u get the answer

Answers

20% of 120 is 24.

To find this answer, you need to use the percentage formula (is over of equals the percentage over 100, is/of = p/100).

Plug in the known numbers. You know you need 20%, so plug 20 into the percentage place.

is/of = 20/100

You know the "of," which is 120, so plug that in.

is/120 = 20/100

You don't know the "is," so to find it you need to multiply cross multiply 120 by 20. Then you need to divide your answer by 100 to find your missing value (is).

120 * 20 = 2,400
2,400 / 100 = 24

Multiply 120 by .2 to get 24

Select all stories that the tape diagram can represent.

Answers

The expression that represents the tape diagram are B, C and E.

What are the equivalent expressions?

Expressions that are equivalent to the same thing, even when they have distinct appearances. When we enter the same value(s) for the variable, two algebraic expressions that are equivalent have the same value (s).

From the tape diagram:

The expression is,

87 - (39 + 4x).

(A).

There are 87 children and 39 adults at a show. The seating in the theater is split into 4 equal sections.

The expression: (87 + 39)/4x.

(B). There are 87 first-graders in after-care. After 39 student are picked up, the teacher put the remaining students into 4 groups for an activity.

The expression: 87 - (39 + 4x).

(C). Lin buys a pack of 87 pencils. She gives 39 to her teacher and shared the remaining pencils between herself and 3 friends.

The expression: 87 - (39 + 4x).

(D). Andre buys 4 packs of paper clips with 39 paper clips in each. Then he gives 87 paper clips to his teacher.

The expression: 4(39) - 87

(E). Diego's family spends $87 on 4 tickets to the fair and a $39 dinner.

The expression: 87 - (39 + 4x).

Therefore, the equivalent expressions are B, C and E.

To learn more about the equivalent expression;

brainly.com/question/28170201

#SPJ5

Answer:

boxes 2, 3, and 5

Step-by-step explanation:

because giving 87 pencils when that your total doesn't make sense neither doesa theatre being split into 4 equal sections when there are five sections and they arent even equal

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