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3 years ago

4. The money in my savings account and in my sister's savings account is shown in the table below for a few

Mathematics

2 answers:

kodGreya [7K]3 years ago

7 0

Your sister made that cash then spent it

Troyanec [42]3 years ago

3 0

Answer:

Step-by-step explanation:

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Find x, round your answer to the nearest integer.

Makovka662 [10]

Answer:

B. 8

Step-by-step explanation:

cos37° = 4/5 = x/10

=> 4(10) = 5x

=> x = 40/5

=> x = 8

The correct option is B.

8 0

2 years ago

Ted Thomason found a good deal when he purchased a bedding set. He paid the store's clerk two $20 bills and a $5 bill. The clerk

Lina20 [59]

I'm pretty sure $39.31 was the original sales cost because if you use proportions to find out what is 7.2% of 42.35 ( what you get you you subtract 45 by 2.65). Your equation would be x/42.35 = 7.2/100. 42.35 is the whole because tax is adding money onto your original cost, making that the part. When you cross multiply you get 100x = 304.92. Then you divide by 100 on both sides to isolate the variable, to get x = 3.04. But you don't stop there. Since 3.04 is only the 7.2%, you have to subtract that by 42. 35 to get a sum of 39. 31 as your total.

6 0

3 years ago

Annie walks 15 feet away from her house and places a mirror on the ground. She backs 4 feet away from the mirror so that she can

artcher [175]

Answer:

The house is 18.75 feet tall

Step-by-step explanation:

The triangles are similar by the AA postulate.

We are given the length of the bottom sides of the triangles, 4 and 15 respectively.

Thus, the ratio is 4:15

We are also given the height of Annie's eyes, which is 5 feet. The height of the side that corresponds to the house is 5, so we can set up a proportion.

$\frac{4}{15} = \frac{5}{x} \\4x = (5*15) = 75\\x = \frac{74}{4} \\x = 18.75$

Thus, the house is 18.75 feet tall.

5 0

3 years ago

What is 9x+7y=-18 using substitution

wlad13 [49]

7y=-9x-18

that is all I can do

4 0

3 years ago

What is the value of x?

Papessa [141]

The value of x is 2 because we can compare like terms

5 0

3 years ago