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1 year ago

HELP ME PLEASE AND THANKS SO MUCH

Mathematics

2 answers:

Zinaida [17]1 year ago

4 0

Answer:

180-(65+57)=58

Step-by-step explanation:

loris [4]1 year ago

4 0

Answer:

Step-by-step explanation:

There's only 1 angle to find.

45 + 57 + ? = 180 All triangles have interior angles that add to 180.

102 + ? = 180 Combined 45 and 57 Subtract 102 from both sides

? = 180 - 102 Combine

? = 78

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The radius of a sphere is 13 cm. What is the surface area of the sphere? Round to the nearest tenth

AlekseyPX

Answer:

2123.72 cm²

Step-by-step explanation:

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2 years ago

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CaHeK987 [17]

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2 years ago

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Four more than the quotient of a number and 3 is 9

barxatty [35]

The algebraic expression of "Four more than the quotient of a number and 3 is 9" is $\frac{x}{3}+4=9$

The value of x=15

Step-by-step explanation:

We need to express "Four more than the quotient of a number and 3 is 9" as algebraic expression.

Let the number = x

Solving:

quotient of a number and 3: $\frac{x}{3}$

Four more than the quotient of a number and 3: $\frac{x}{3}+4$

Four more than the quotient of a number and 3 is 9: $\frac{x}{3}+4=9$

Now, finding value of x:

$\frac{x}{3}+4=9\\Adding\,\,-4\,\,on\,\,both\,\,sides:\\\frac{x}{3}+4-4=9-4\\\frac{x}{3}=5\\Multiply\,\,both\,\,sides\,\,by\,\,3:\\x=5*3\\x=15$

So, value of x = 15

Keywords: Algebraic expression

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4 0

2 years ago

Help me please idk how to do this

Tems11 [23]

Answer: your answer would be B

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Step-by-step explanation:

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2 years ago

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Mr. Brown shares with the class that 70% of the students got an A on the English vocabulary quiz. If Mr. Brown has 100 students,

mezya [45]

Answer:

a. $\frac{70}{100}$

b. 0.7

c. 0.7=70%= $\frac{70}{100}$

Step-by-step explanation:

70% of 100 received an A, that is 70/100 times 100 equal to 70

$\frac{70}{100}*100=70$

a. 70% = $\frac{70}{100}$

b. $\frac{70}{100}$ = 0.7

Notice that 70/100 is equal to 7/10 which is 0.7

c. 0.7=70%= $\frac{70}{100}$

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3 years ago