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Dimas [21]
3 years ago
15

1. On a 20 question test, Sarah got 2 questions wrong. What percent of the test does he have correct?

Mathematics
2 answers:
Lelechka [254]3 years ago
8 0

Answer:

1.) 80% if each question is 1 point

2.) 160 people

Step-by-step explanation:

e-lub [12.9K]3 years ago
3 0

Answer:

1=90%

Step-by-step explanation:

20-2=18, 18/20=90%

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Use the Quadratic Formula to solve the equation x2 + 4x = – 11.
Tpy6a [65]

Answer:

3rd option is the correct answer

7 0
2 years ago
Suppose R = {1,3,5,7,9,11,13,15,17} and D={3,6,9,12,15,18,21,24,27} r d
Free_Kalibri [48]

The intersection of sets R and D is give by the following set:

R ∩ D = {3, 9, 15}.

<h3>What is the missing information?</h3>

This problem is incomplete, but researching it on a search engine, we find that it asks the intersection of sets R and D.

<h3>What is the set that is the intersection of two sets?</h3>

The set that is the intersection of two sets is composed by the elements that belong to both sets.

For this problem, the sets are given as follows:

  • R = {1,3,5,7,9,11,13,15,17}.
  • D={3,6,9,12,15,18,21,24,27}

Hence the intersection is given by:

R ∩ D = {3, 9, 15}.

As the elements 3, 9 and 15 are the only ones that belong to both sets.

More can be learned about intersection of sets at brainly.com/question/11439924

#SPJ1

3 0
1 year ago
Help please <br> If steak costs $8.45 per pound, what will be the total cost of 0.8 pounds of steak?
krok68 [10]

Answer:

$6.76

Step-by-step explanation:

Multiply 8.45 by 0.8 and you will get 6.76

5 0
3 years ago
Read 2 more answers
A teacher has an annual income of $55,125.
kow [346]

Answer:

A - 3307,50

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If the total area of a picture measuring 10 inches by 12 inches plus a matting of uniform width surrounding the picture is 224 s
ELEN [110]
Let
x-----------> <span>uniform width surrounding the picture

we know that
(10+2x)*(12+2x)=224-----> 120+20x+24x+4x</span>²=224
4x²+44x+120-224=0
4x²+44x-104=0

using a graph tool-----> to resolve the second order equation
see  the attached figure

the solution is
x=2 in

the answer is
2 inches

4 0
3 years ago
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