750 split in to the ratio 7:8

Answers

Answer 1
Answer: Given:
total = 750
ratio = 7 : 8

We need to get the ratio of the number to its total

7 + 8 = 15 ; 7/15 and 8/15 is the ratio of the number to its total.

We multiply these ratio to the total of 750

7/15 * 750 = 350
8/15 * 750 = 400

7:8 is equal to 350:400



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Turn 8 21/40 into a decimal

Answers

TO get the decimal 8 is obviously 8.0 and for 21/40 just divide 40 for both the numerator and denominator. Then add the 8.0 with the answer you get for 40 together to get the final answer.
821 divide 40 is 20.53 and i got that answer by first i divide the numerator 821 by the denoinator 40 so that how i got it

Explain how you could add 678 + 303 using mental math

Answers

678 + 303 = 981

Here are a few examples to get you started:
600 + 300 = 900 
78 + 3 = 81 
900 + 81 = 981
Here's another one:
678 = 600 + 70 + 8 
303 = 300 + 00 + 3 
Add the ones place = 11 
Add the tens place = 70 
Add the hundreds place = 900 
Now add 900 + 70 + 11 = 981
Hope this helps! :-)

91 is 65% of what number

Answers

First turn 65% into a decimal.  So 0.65
Then divide 91 by that decimal.
91÷0.65=140
So 91 is 65% of 140
okay so its saying that 91 = 0.65x
all we have to do is solve this like an equation
so we divide both sides by 0.65
         91 = 0.65x 
    ÷0.65 = ÷0.65   the 0.65s on the right side cancel out and x is alone 
      140  =  x 
so our answer is 140!
or to write this in proper answer form we would say 
91 is 65% of 140
i hope this was helpful:)
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Find the sum of 130 cm. And 50 mm.in meters

Answers

The sum of 130 cm and 50 mm. in meters is 1.35 m.

What is the unitary method?

The unitarymethod is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. The unitary method is a method by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit.

We are given the sum of 130 cm and 50 mm. in meters

130 cm = 130 / 100

= 1,3m

50 mm = 50 / 1000

= 0,05m

Therefore, the addition is;

1.3 + 0.05m = 1.35m

Learn more about the unitary method, please visit the link given below;

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130 cm = 130 / 100 = 1,3m
50 mm = 50 / 1000 = 0,05m
1,3 + 0,05m = 1,35m

What is the value of the underlined digit in 91,764,350

Answers

The underlined digit is 700,000 because if you look at where the 7 is and take out the 91 and make all other numbers a 0 it turns into 700,000

1)Which choices shows the statement below in if-then form? Exercise makes you healthier.A) if you don’t exercise ,then you won’t be healthier.
B) if you are healthy, then you exercise.
C) if you don’t exercise, you won’t be healthier.
D) if you exercise, then you will be healthier.

2) which of the following is a conditional statement for the following statement? Cardinals are red birds.
A) if a bird is not red, then it is not a cardinal.
B) if a cardinal is red, then it is a bird.
C) if a bird is red, it is a cardinal.
D) if a bird is a cardinal, it is red

Answers

1. if you exercise, then you will be healthier.

2. if a bird is a cardinal, it is red

What is Conditional Statement?

A conditional statement is a statement that can be written in the form “If P then Q,” where P and Q are sentences.

Given:

Exercise makes you healthier.

So, we have to write in the form of if- then statement

Thus, the statement is if you exercise, then you will be healthier..

Now, for the secondstatement "Cardinals are red birds."

The conditional statement is  if a bird is a cardinal, it is red.

Learn more about Conditional Statement here:

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Answer:

D for both

Step-by-step explanation:

Exercise is the condition and healthier is the outcome. So if you exercise then you will be healthier.

All cardinals are red. But not all red birds are cardinals. So d is the only one that is always true