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4 years ago

Jimmy scored a total of 80 points on 2 tests. He scored 10 points more on the 2nd test. What was his score on the first test?

Mathematics

1 answer:

zavuch27 [327]4 years ago

5 0

35 would be the answer. 45+35=80 and 45 is 10 more than 35

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If sin(x) = 0.28, what is cos(90° - x)

vlabodo [156]

$\bf \textit{Cofunction Identities}
\\\\
sin\left(\frac{\pi}{2}-\theta\right)=cos(\theta)
\qquad 
cos\left(\frac{\pi}{2}-\theta\right)=sin(\theta)
\\\\\\
tan\left(\frac{\pi}{2}-\theta\right)=cot(\theta)\qquad 
cot\left(\frac{\pi}{2}-\theta\right)=tan(\theta)
\\\\\\
sec\left(\frac{\pi}{2}-\theta\right)=csc(\theta)\qquad 
csc\left(\frac{\pi}{2}-\theta\right)=sec(\theta)$

therefore, sin(x) = cos(90° - x).

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4 years ago

Complete the square to solve the equation below

frutty [35]

$x^2+x= \frac{7}{4}$

Take one-half of the coefficient of x and square it, then add it to both sides.

$x^2+x+ (\frac{1}{4}) =\frac{7}{4}+ (\frac{1}{4})$

$x^2+x+(\frac{1}{4})= 2$

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$x+\frac{1}{2}=\pm \sqrt{2}$
-----------------------------------------------------------------
$x+\frac{1}{2}=- \sqrt{2}$
$x=-\frac{1}{2}- \sqrt{2}$ <=

AND

$x+\frac{1}{2}= \sqrt{2}$
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3 years ago

How many Squares are there ?

Charra [1.4K]

Answer:

Step-by-step explanation:

most of them are rectangles

8 0

2 years ago

Read 2 more answers

a bakery used 8 1/2 cups of flour to make a full sized cake. if they made a cake that was three-quarter the sized, how many cups

faltersainse [42]

Answer:

$6 \frac{3}{8}$

Step-by-step explanation:

Let's start by turning 8 1/2 into an improper fraction, which would be 17/2. To find the amount of cups needed for a cake that is 3/4 of a full cake, we multiply 17/2 by 3/4.

$\frac{17}{2} *\frac{3}{4} = \frac{17*3}{2*4} = \frac{51}{8}$

Turn the fraction into a mixed number:

$6 \frac{3}{8}$

That should be the correct answer. Hope this helps!!!

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3 years ago

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Alik [6]

Answer:

the correct answer would be C

Step-by-step explanation:

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3 years ago