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creativ13 [48]
3 years ago
8

Work out 8 x(3 + 7)​

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
8 0

Answer:

Answer is 80

Step-by-step explanation:

PEMDAS (Parentheses - Exponents - Multiplication - Division - Addition - Subtraction)

Do (3+7) first which equals 10.

Your equation is then simply 8 x 10 which is 80.

Keith_Richards [23]3 years ago
8 0

Answer:72

Step-by-step explanation:

8 × (3+7) can be written as 8 (3+7)

Now,simplify

8 (3+7)

8 (10)

8×10

80 is the answer.

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Can you plz help me with this
kiruha [24]

Answer:

1.794

Step-by-step explanation:

use the calculator

3 0
3 years ago
Read 2 more answers
Jack is mixing red paint with blue paint to make purple paint. he adds 2/5 of a fluid ounce of red to 11/15 of a fluid ounce of
Sedaia [141]

Answer:

Step-by-step explanation:

Change 2/5 to a decimal

2/5 = 0.4

Change 1 2/15 of a fluid ounce to a decimal.

1.133333

Set up your proportion.

0.4 / 1.133333 = x / 5               Cross multiply

0.4*5 = 1.133333*x

2 = 1.133333 x                         Divide by 1.1333333

2/1.33333 = x

x = 1.5 ounces.

He needs 1.5 ounces of red to make 5 ounces of purple.

8 0
3 years ago
4/9 ÷2/3 divided <br><br><br> Thanks for helping!
notsponge [240]

Answer:

2/3

Step-by-step explanation:

4/9 ÷ 2/3

First flip the second fraction (the reciprocal)

4/9 ÷ 3/2

Then multiply

4/9*3/2= 12/18

And simplify

12/18 = 2/3

Hope this helps

7 0
3 years ago
If the radius of a circle is 5 units, in square units what is the sector area given m(arc)=142
Rufina [12.5K]

Answer:

The correct option is  30.6

Therefore,

Area of Sector is 30.6 units².

Step-by-step explanation:

Given:

Central angle = θ = 142°

Radius = r = 5 units

pi = 3.14

To Find:

Area of Sector = ?

Solution:

If the θ  measured in degree then the Area of Sector is given as

\textrm{Area of Sector}=\dfrac{\theta}{360\°}\times \pi r^{2}

Where r = radius, θ = Central angle

On substituting the values we get

\textrm{Area of Sector}=\dfrac{142}{360\°}\times \pi (5)^{2}

\textrm{Area of Sector}=0.39\times 3.14\times (5)^{2}

\textrm{Area of Sector}=30.615\ units^{2}

Therefore,

Area of Sector is 30.6 units².

3 0
3 years ago
Find the area of quadrilateral KLMN​
WITCHER [35]

Step-by-step explanation:

I just answered this ...

the first thing we notice : the quadrilateral has 2 pairs of equally long sides with 2 angles being openly 90°.

so, we are dealing with a rectangle here.

we know that one pair of the sides (NK = LM) are 24 cm long.

and we know that KL:LM = 3:4.

that means that the pair KL = MN are the shorter sides of the rectangle. and their length is according to the ratio 3/4 of NK=LM.

3/4 × 24 = 18 cm

the area of that rectangle is therefore

18 × 24 = 432 cm²

6 0
3 years ago
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