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2 years ago

14

A teacher gave a test with 50 questions, each worth the same number of points. Donovan got 39 out of 50 questions right. Marci's

score was 92%. How many more questions did Marci answer correctly Marci answered more questions correctly.

1 answer:

JulijaS [17]2 years ago

3 0

Answer:

donovan= 39/50 VS. marci= 44/50

5 more

Step-by-step explanation:

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All 4 questions please

scZoUnD [109]

Answer:

π = S/2πrh
v = √2E/m
b = (-7a+c)/2
x =3y-1

Step-by-step explanation:

1.

$S = 2\pi rh\\Divide\:both\sides\:of\:the\:equation\:by\:2rh\\\\\frac{S}{2rh} = \frac{2 \pi rh}{2 rh} \\\\\pi = \frac{S}{2rh}$

2.

$E = \frac{1}{2} mv^2\\\\E = \frac{mv^2}{2} \\\\Cross\:multiply\\\\2E =mv^2\\Divide\:both\:sides\:of\:the\:equation\:by\:m\\\frac{2E}{m} = \frac{mv^2}{m} \\\\\frac{2E}{m} =v^2\\Square\:root\:both\:sides\:of\:the\:equation\\\sqrt{\frac{2E}{m} } = \sqrt{v^2} \\\\\sqrt{\frac{2E}{m} } =v\\\\v =\sqrt{\frac{2E}{m} }$

3.

$7a+2b =c\\Isolate\:b\\\\2b =c-7a\\2b= -7a+c\\Divide\:both\:sides\:of\:the\:equation\:by \:2\\\frac{2b}{2} =\frac{-7a+c}{2} \\\\b = \frac{-7a+c}{2}$

4.

$y = \frac{1}{3} (x+1)\\\\y = \frac{x+1}{3}\\\\Cross\:multiply \\3y =x+1\\Isolate \:x\\3y -1=x\\\\x =3y-1$

7 0

3 years ago

Charles saves $y. Sharon saves 3 times as much as Charles. Jason saves 50.00 more thN Sharon. How much do they save

Whitepunk [10]

Charles-C
Sharon- S
Jason-J

C=y
S= 3y
J=(3y)+50

4 0

3 years ago

Given a right cone with base area b and height h what is the formula for the voluime

TEA [102]

Probably, the formula of Volume for a cone of height 'h' and base area 'b' is :

$\frac{1}{3}bh$

8 0

3 years ago

Read 2 more answers

Lin wants to know how many games teenagers in the United States have on their phones.

xeze [42]

Answer:

1a. 42% of teens spend time playing games on their phones

2a. Collecting data would be difficult because you have t figure out what state in the U.S to use.

3a. 513 students from 84 colleges nationwide found that 34.89 percent of them spend a lot of time playing games on their smartphones, and 42.69 percent play occasionally.

5 0

2 years ago

How would you describe this slice that created the square

andreev551 [17]

For anyone else who needs the right answer...it’s “parallel to the base”. I just did it and I got it right.

8 0

3 years ago