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Alex
2 years ago
5

True or false? Ask Bruno.

Mathematics
2 answers:
DIA [1.3K]2 years ago
7 0
A. true
b. true
c. false
Andreyy892 years ago
7 0
True, true false

1 is true because complimentary angles add up to 90 degrees to which they do.
2 is true because all angles in a triangle add to 180 degrees.
3 is false because vertical angles are were each of the pairs of opposite angles made by two intersecting lines.
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steve has quiz scores of 60,64,75,71. If all the quizzes count the same, what is the lowest grade he can make on the next quiz t
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Answer:

The last quiz score must be at least an 80 to get the average to be a 70.

Step-by-step explanation:

In order to find this, you need to take the average of the 4 test scores along with the unknown test score (x). So, to find an average, we add all the numbers together and divide by the amount of tests taken. We can then set this equal to 70 since that is the minimum average.

(60 + 64 + 75 + 71 + x)/5 = 70 ------> Multiply both sides by 5

(60 + 64 + 75 + 71 + x) = 350 -----> Combine like terms

270 + x = 350 -----> Subtract 270 from both sides

x = 80

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A school club is raising money for a trip, and needs to reach $10,000. Their fundraising progress is modeled by the function
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3 years ago
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The high school leadership team is having a car wash. They charge $5.50 for large cars and $4.00 for small cars . They had a suc
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Answer: 56 large cars and 86 small cars.

Step-by-step explanation:

Let's call:

l: the number of large cars.

s: the number of small cars.

Then, you can set up the following system of equations:

\left \{ {{l+s=142} \atop {5.50l+4.0s=652.50}} \right.

You can use the Elimination Method:

- Multiply the first equation by -4.0

- Add both equations.

- Solve for l.

\left \{ {{-4.0l-4.0s=-568} \atop {5.50l+4.0s=652.50}} \right.\\--------\\1.5l=84.5

l≈56

Substitute l=56 into one of the original equations and solve for <em>s:</em>

<em> </em>56+s=142\\s=142-56\\s=86

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3 years ago
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