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3 years ago

Evaluate 6 x (15 - 7) - 4 A: 10 B: 24 C: 44 D: 79

Mathematics

2 answers:

Svet_ta [14]3 years ago

6 0

First Of All Please Follow This
PEMDAS

P: ()
E:^
M:x
D:/
A:+
S:-

6 x (15 - 7) - 4
6 x (8) - 4
48 - 4
44

Answer: C

Serhud [2]3 years ago

3 0

Answer:

Step-by-step explanation:

6 x (15 - 7) - 4

PEMDAS says Parentheses first

6 x (8) - 4

Then multiply

48 -4

Then subtract

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xenn [34]

Answer:

The closet equivalent of the ratio of 'a' to 'c' is:

$\frac{a}{c}=1.680\:$

Step-by-step explanation:

Given

a is 63% of x

i.e.

a=0.63x

c is 3/8 of x.

i.e.

c=3/8x

Hence,

$\frac{a}{c}=\frac{0.63x}{\frac{3}{8}x}$

$\frac{a}{c}=1.680\:$

Thus, the closet equivalent of the ratio of 'a' to 'c' is:

$\frac{a}{c}=1.680\:$

7 0

3 years ago

Heidi looks at the donkeys and

Georgia [21]

Answer:

7 donkeys

Step-by-step explanation:

Given

A system consisting of donkeys and tourists

Heads = 50

Legs = 114

Required

Calculate number of donkeys.

Represent donkeys with D and tourists with T.

By means of identification; donkeys and tourists (human) both have 1 head.

This implies that

Number of Heads = D + T

50 = D + T ----- Equation 1

While each donkey have 4 legs, each tourists have 2 legs.

This implies that

Number of legs = 4D + 2T

114 = 4D + 2T ---- Multiply both sides by ½

114 * ½ = (4D + 2T) * ½

57 = 4D * ½ + 2T * ½

57 = 2D + T ----- Equation 2

Subtract equation 1 from 2

57 = 2D + T

- (50 = D + T)

---------------------

57 - 50 = 2D - D + T - T

7 = D

Recall that D represents the number of donkeys.

So, D = 7 implies that

The total number of donkeys are 7

6 0

3 years ago

suppose Tomas buys a total of 30 baseball and football cards in week 5 . how many of each would he have to buy to keep the same

Charra [1.4K]

Answer:

18 baseball cards
12 football cards

Step-by-step explanation:

The only relationship shown in the table is in week 1, where the ratio of baseball to football cards is ...

baseball : football = 9 : 6

In week 1, the total of these numbers is 15. You want the total in week 5 to be 30, double the total in week 1. So, Thomas needs to purchase double the numbers he purchased in week 1:

18 baseball cards
12 football cards

_____

<em>Comment on the attachment</em>

This table came from another question you posted, a question with no content other than the table. The blue numbers are blanks in the original table that have been filled in so as to keep the same 3:2 proportion in each week. They appear to have no bearing on this question.