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Bezzdna [24]
3 years ago
15

What is the value of the expression? ​−2.1(4.7+(−7.4))​ HELPPP

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
6 0
I think it's 5.67 or 5.7 rounded to the nearest tenth.
sergey [27]3 years ago
4 0
To solve this, follow the order of operations, PEMDAS (Parentheses-Exponents-Multiplication-Division-Addition-Subtraction)

So to start off add 4.7 and -7.4 together

-2.1(-2.7)

Then multiply -2.1 by -2.7. Since these are both negative, your answer will be positive.

5.67 is your answer.

Hope this helps!


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How do the expressions 72 divided and -72divided by (-9) and compare when they are evaluated?
padilas [110]

Complete question is;

How do the expressions 72 divided by 9 and -72 divided by (-9) compare when they are evaluated?

A. They have different values and are different signs.

B. They have different values but are the same sign.

C. They have the same value but are different signs.

D. They have the same value and the same sign

Answer:

D. They have the same value and the same sign

Step-by-step explanation:

For 72 divided by 9,it is;

72/9 = 8

Usually when we don't have any sign in front of a number, it is said to be positive.

Thus, the answer can be expressed as; +8

Also, when -72 is divided by (-9), it is;

-72/-9

The negative signs will cancel out to give; 8

Similar to the first division, since no sign is attached to 8,it is said to be positive as +8.

This means both divisions yield same values and same signs

5 0
3 years ago
Please anyone help question 3a(i) and (ii) I will mark brainliest answer
Alex73 [517]

Answer:

i) is correct answer i think

7 0
3 years ago
Maria has three red dresses, 2 white dresses, and one blue dress . What is the probability she will wear a blue dress at her par
dedylja [7]

Answer:

1/6

Step-by-step explanation:

there are 6 dresses altogether and 1 blue dress.

8 0
3 years ago
Read 2 more answers
Four children have small toys. The first child has 1/10 of the toys, the second child has 12 more toys than the first, the third
GREYUIT [131]
Let the total toys be x.

The first has (1/10)x =  x/10


The third child has one more toys than the first =  x/10  + 1

The fourth has double of the third:  =  2* (x/10 + 1)  =  2x/10 + 2


Since we know that the second child has 12 more toys than the first

Therefore the Second  minus First = 12.


First let us find the second.

1st + 2nd + 3rd + 4th = x

x/10   +  2nd +  (x/10 + 1) + (2x/10 + 2) = x

2nd + x/10  + x/10 + 1 + 2x/10 + 2 = x

2nd + x/10 + x/10 + 2x/10 + 1 + 2  = x

2nd + 4x/10 + 3 = x

2nd = x - 4x/10 - 3

2nd =  6x/10  - 3

But recall

2nd - 1st = 12

6x/10 - 3 - x/10 = 12

6x/10 - x/10 = 12 + 3

5x/10 = 15

5x =  15 * 10

x  = 15*10 /5

x = 30

So there were 30 toys in all.
3 0
3 years ago
The store is selling lemons at 2 for $1.50. Each lemon yields about 2 tablespoons of juice. How much will it cost to buy enough
Andrei [34K]

Answer:

$4.50

Step-by-step explanation:

3/4 cups = 12 tablespoons

$1.50 yields 4 tablespoons

12 / 4 = 3 purchases at $1.50 = $4.50

8 0
3 years ago
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