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irinina [24]
3 years ago
10

X - - 3 = 10 What is the value of x?

Mathematics
2 answers:
kiruha [24]3 years ago
5 0

Answer:

x=7

Step-by-step explanation:

First, you start with keep, change, change. Keep the x, change the minus to a plus, and then make the negative 3 into three.

So you should have X+3=10

Take the 10 and minus 3

Then you have 7

So your answer will be X=7

Pepsi [2]3 years ago
4 0

Answer:

x = 7

Step-by-step explanation:

Rule: an even number of - signs written one after another produces a plus number.

So - - 3 = 3

The rule also lets you do something strange like

- - - - 4 = 4 but you hardly ever see this.

Rule: an odd number of minus signs produces a minus number.

x + 3 = 10                 Subtract 3 from both sides.

x + 3 - 3 = 10 - 3      

x = 7

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The Dial and the Lewis families when to Taco Box for dinner. The Dials bought 3
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Answer:

A burrito costs $8, while a taco costs $6.

Step-by-step explanation:

Given that the Dial and the Lewis families when to Taco Box for dinner, and the Dials bought 3 burrito meals and 4 taco meals for $ 48, while the Lewis' bought 6 burrito meals and 2 taco meals for $ 60, to determine how much does a burrito meal cost and how much does a taco meal cost make the following calculations:

3B + 4T = 48

3B = 48 - 4T

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3B = 30 - 1T

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30 = 48 - 4T + 1T

30 - 48 = -3T

-18 = -3T

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6 = T

3B + 4x6 = 48

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B = 24/8

B = 8

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60 = 60

Thus, a burrito costs $ 8, while a taco costs $ 6.

3 0
3 years ago
Can someone explain the Pythagorean theorem to me, please?
Lana71 [14]
Pythagorean theorem is applied to the right triangles. 

Pythagorean theorem is a²+b²=c².

a is the length is the leg, b is also a leg and c is the hypotenuse
6 0
3 years ago
Mr. Koury uses 9 carrots each time he makes a carrot cake. He has orders for 3 cakes. Complete the equation below to show how ma
hammer [34]
You didn’t post the equation but to solve this you multiply 9 by 3 which equals 27.

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7 0
3 years ago
Mixed problem with fractions <br> 1 over 2 minus 1 over 4
yulyashka [42]
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Elly and Drew work together to collect data to estimate the percentage of their classmates who own a particular brand of shoe. U
ladessa [460]

Answer:

d. The width of Elly's interval will be less than the width of Drew's interval.

Step-by-step explanation:

The confidence level and the width of the confidence interval are direct proportional. This means that a confidence interval with a higher confidence level has a higher width.

For example, a 99 percent confidence interval is wider than a 90 percent confidence interval.

The midpoint of the confidence interval is the mean of the population, no matter the confidence level.

In this problem, we have that:

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The correct answer is:

d. The width of Elly's interval will be less than the width of Drew's interval.

4 0
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