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dimulka [17.4K]
3 years ago
7

Caleb scored 60 on his first math test. He studied diligently for the next test and earned a score of 90. What is his percent of

increase from the first test to the second test? A. 15% B. 30% C. 50% D. 66 2/3%
Mathematics
1 answer:
Scrat [10]3 years ago
7 0

Your answer would be C. 50%

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Standard form of a line passing through points (1, 3) and (-2, 5)
____ [38]

Answer:

<h2>2x + 3y = 33 </h2>

Step-by-step explanation:

As we move from (-2, 5) to (1, 3), x increases by 3 and y decreases by 2.

Hence, the slope of this line is m = rise / run = -2/3.

Start with the slope-intercept form y = mx + b.

Substitute 3 for y and 1 for x and -2/3 for m:

3 = (-2/3)(1) + b.

Remove fractions by mult. all three terms by 3:

9 = -2 + b, so b = 11, and y = (-2/3)x + 11

Again, mult. all three terms by 3:

3y = -2x + 33, or, in standard form,

<h2>2x + 3y = 33 </h2>
6 0
3 years ago
What is 50,000 + 7,000 + 400 + 10 + 6 in standard form?
ziro4ka [17]

Answer:

57,416

Step-by-step explanation:

50,000 + 7,000 + 400 + 10 + 6

50,000 is in the ten thousands place.

7,000 is in the thousands place.

400 is in the hundreds place.

10 is in the tens place.

6 is in the ones place.

8 0
3 years ago
Read 2 more answers
Type the correct answer in the box. Use numerals instead of words. Enter your answer as a fraction in simplest form, using/ for
castortr0y [4]

Answer:    

1/4

Step-by-step explanation:

Since there is 4 colors and four rooms there is a 1/4 possibility that she paints the room green.

5 0
3 years ago
Find m c to the nearest tenth if c=48 a=34 m
Brut [27]
C=48
a=34m

m=a/34

m*c=48*a/34=48a/34=24a/17
7 0
3 years ago
Can you help me? sin 35 (degrees) Thanks!
Nata [24]
<span>OK, here's a *very* approximate "creative" method: 
</span><span>
sin(a+b)=sin(a)cos(b) + cos(a)sin(b) </span>
<span>
choose a=30deg and b=5deg </span>
- sin(a)=0.5 (exact) 
- b is a small number so we say sin(b)~b (in radians). We can do a long division for this: 3.14/36 = 0.087 radians 
- similarly, for b sufficiently small, cos(b)~1 
<span>- now we only need cos(a) = sqrt(3)/2. We can approximately calculate sqrt(3) as 1.73, (by trial-and-error or better, by using the Babylonian method;  so sqrt(3)/2 = 0.865 </span>
<span>
Finally, sin(30 + 5) = (0.5 x 1) + (0.087 x 0.865) = 0.575 (calculating more digits is of no use because the sin(b)=b and cos(b)=1 are quite inaccurate approximations). </span>

<span>So that wasn't all too much effort, and we're close to the correct answer (0.574)


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
8 0
3 years ago
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