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soldi70 [24.7K]
2 years ago
10

Sara got 37 out of 50 questions right, and Tony got 29 out 40, who did better, Tony or Sara?​

Mathematics
2 answers:
lozanna [386]2 years ago
7 0
I would find their score by dividing what they got by what it was out of...

sara - 37 / 50 = 74%
tony - = 29 / 40 = 72%

therefore, sara did better then tony
BabaBlast [244]2 years ago
4 0

Answer:

Sara did better.

Step-by-step explanation:

To find who did better, I calculated their overall percentage each scored on their test.

For Sara:

37÷50=0.74

Multiply the decimal by 100 to get a percentage of 74%.

For Tony:

29÷40=0.725

Multiply the decimal by 100 to get a percentage of 72.5%

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15. Construct the slope-intercept form equation of the line passing through (-5,23) and (10,-5).
Radda [10]

Answer:

15<em>y</em> = -28 <em>x</em> + 205.

Step-by-step explanation:

Slope intercept  form of equation is <em>y = mx + c</em> where m is slope and c is the y intercept.

Now slope of line passing through points (-5, 23) and (10, -5):

m = \frac{y_{2} - y_{1} }{x_{2} - x_{1} } = \frac{-5 -23}{10 + 5} = \frac{-28}{15}

Now equation of line:

<em> y = mx + c</em>

substituting the value of m in above expression,

y = -\frac{28}{15} x + c

Now, since the line is passing through the point (-5, 23) therefore, x = -5 and y = 23. By substituting these values in above equation,

23 = -\frac{28}{15} \times (-5) + c

23 = \frac{28}{3} + c

c = 23 - \frac{28}{3} = \frac{69 - 28}{3} = \frac{41}{3}

So equation of line in slope intercept form:

y = -\frac{28}{15} x + \frac{41}{3}

Further solving,

15<em>y</em> = -28 <em>x</em> + 205.

3 0
2 years ago
Factorise the quadratic equation x square + 2 x + 36​
LuckyWell [14K]

Answer:

Click on the link below to view the answer with the explanation in futher detail

Explanation:

Click the attached link to view the answer

5 0
2 years ago
-28-(-16)= What is the answer
Finger [1]

Answer:

-12

Step-by-step explanation:

<u>Step 1:  Find the answer </u>

Subtracting a negative number is same as adding a positive number

-28 - (-16)

-28 + 16

-12

Answer:  -12

3 0
2 years ago
On the Richter scale, the magnitude, M, of an earthquake is given by M= 2/3logE/Eo, where E is the energy released by the earthq
Ivahew [28]

Answer:

See below

Step-by-step explanation:

Part A

<em><u>Formula</u></em>

M = 2/3 * log(E/Eo)

<em><u>Givens</u></em>

M = ??

E = 2 * 10^15 joules

Eo = 10^4.4

<em><u>Solution</u></em>

M = (2/3) * log(2 * 10^15 / 10^4.4)

M = (2/3 ) log (7.96 * 10 ^ 11)

M = (2/3) * 11.901

M = 7.934

Part B

What the question is saying is that E/Eo = 10000

You don't have to figure out exact values.

M = 2/3 * log(10000)

M = 2/3 * 4

M = 8/3 or 2 2/3 or 2.66667

If you have choices, please list them.

4 0
3 years ago
What's the average rate of change?<br> f(x) over 4&lt;=x&lt;=7
N76 [4]

Answer:

i dont know

Step-by-step explanation:

XD like am i supposed to jknow that?

8 0
2 years ago
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