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Yakvenalex [24]
2 years ago
13

PLZ HELP fill in the blanks ​

Mathematics
2 answers:
Fantom [35]2 years ago
8 0
5 x (2 + 9) = (5 x 2) + (5 x 9)
Ok done. Thank to me :>
Alexxx [7]2 years ago
6 0

Answer:

Step-by-step explanation:

First, to solve the problem, you must distribute the 5 to the (2 + 9). Which ends you up with 10 + 45. Which would give you 55, but we aren't solving it.

So instead, when you are distributing, you are taking the number next to the parentheses (5) and multiplying it into the parentheses like this:

(5 x 2) + (5 + 9).

That is your answer. Hope this helps.

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if a dog food costs 0.75 per pound, and dog bones cost 1.75 each, what is the cost of 2 bones and 25 pounds of dog food?
Studentka2010 [4]

Answer:

2 bones and 25 pounds of dog food would cost $22.25

Step-by-step explanation:

5 0
3 years ago
What is the domain and range of the graph?
I am Lyosha [343]

Answer:5/8

Step-by-step explanation:

I just need more Brainly points

7 0
3 years ago
The ratio of boys to girls in a group is 5:3. If there are 18 more boys than girls, work out how
zmey [24]
<h3>Answer:  72 people total</h3>

45 boys, 27 girls

============================================================

Explanation:

g = number of girls

g+18 = number of boys, since there are 18 more boys than girls

For example, if g = 7, then g+18 = 7+18 = 25. In this example, we have 7 girls and 25 boys. The problem with this example is the ratio of boys to girls is 25:7 which is not equal to 5:3

We could use trial and error until we land on the solution, or we can use algebra as shown in the next section.

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

The ratio of boys to girls is 5:3, meaning

(number of boys)/(number of girls) = 5/3

which turns into

(g+18)/g = 5/3

after we make the proper substitutions

Let's solve for g

(g+18)/g = 5/3

3(g+18) = 5g

3g+54 = 5g

54 = 5g-3g

54 = 2g

2g = 54

g = 54/2

g = 27

There are 27 girls.

This leads to,

g+18 = 27+18 = 45

So there are 45 boys

In total, we have 27+45 = 72 people

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

Checking the answer:

The claim is that 45/27 is the same as 5/3

For now assume that claim is true. Set the fractions equal to each other and use cross multiplication like so

45/27 = 5/3

45*3 = 27*5

135 = 135

The third equation has the same thing on both sides, so it's a true equation. This must mean the first equation is true as well. Therefore, 45:27 and 5:3 are the same ratio and the answer is confirmed.

You could also use your calculator to note that

45/27 = 1.667

5/3 = 1.667

both decimal values are approximate.

8 0
2 years ago
Carl is using a pine board to make a frame for a picture . He wants the dimensions of the frame to be 2 feet by 18 inches. How l
Tems11 [23]
You could find the need of pine board by finding the perimeter of the frame. But first you need to equalize the units, because one of them is in feet and the other one is in inches.
18 inches = 18/12 feet
18 inches = 1.5 feet

perimeter = l + w + l + w
perimeter = 2 + 1.5 + 2 + 1.5
perimeter = 7

The perimeter is equal to 7 feet, therefore Carl needs 7 feet of pine board
4 0
3 years ago
Which shape does not have a rotational symmetry?
guapka [62]

Answer:

Trapezoid

Step-by-step explanation: Only a 360 rotation will make the shape appear the same again.

8 0
3 years ago
Read 2 more answers
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