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stepladder [879]
4 years ago
10

Please so your work! 20pts and bainlyist for best answer! an = 2n + 11

Mathematics
1 answer:
miv72 [106K]4 years ago
5 0

Step-by-step explanation:

What's the value for a? This cannot be solved unless 'a' or 'n' is given

You might be interested in
What is -3/8 divided by 7/12<br> A. -32/7<br> B.-14/9<br> C. -9/14<br> D. -7/32
Helga [31]
To divide fractions, you flip the second one and multiply them so it would be:
(-3/8) / (7/12)
-3/8 * 12/7
-36/56
This can be simplified to :
-9/14
Because you divide both the numerator and denominator by 4.

Hope this helps :)
5 0
4 years ago
(20×2)20+2)20×2)+20(+41+2=​
andrew-mc [135]

Answer:

123

Step-by-step explanation:

BODMAS

1.multiply 20 by 2

2.20 ×2

3. 40+22+40+20+43=123

3 0
3 years ago
If 5(3x-7)=25, then what is 6x-8?
BlackZzzverrR [31]

Answer:

6x - 8 = 16

Step-by-step explanation:

Solve the equation for x

5(3x - 7) = 25 ( divide both sides by 5 )

3x - 7 = 5 ( add 7 to both sides )

3x = 12 ( divide both sides by 3 )

x = 4

Thus

6x - 8 = 6(4) - 8 = 24 - 8 = 16

8 0
4 years ago
The IQ scores and math test scores of third grade students is given by the regression line ŷ = −23.5 + 0.8534s, where ŷ is the p
Kisachek [45]

Answer: 3.13; The regression line underpredicts the student's math test score.

Step-by-step explanation:

Given the equation of a regression model:

ŷ = −23.5 + 0.8534s,

where ŷ = predicted math score

s = IQ score

An actual math test score for a student is 73.5 with an IQ of 110.

Using the model to predict the score is f the student above ;

ŷ = −23.5 + 0.8534(110)

ŷ = −23.5 + 93.874

y = 70.374

Actual score = 73.5

Hence, since the actual score is greater Than the predicted score, then the model underpredicted the score by

Residual = actual - predicted = (73.5 - 70.374) = 3.126 = 3.13

3 0
3 years ago
Plz help find the area asap i really need help with the math problems
lozanna [386]

Answer:

uh the area is 45 for the first one because 15*9 is 135 and 15*6 is 90 because you get 6 from 15-9 to get the length for the triangle. Then 135-90 is 45.

Step-by-step explanation:

The area for the second shape is 114 because you will take 14 multiplied by 12 and you get 168, then you will take 6*9 which is 54 and subtract that from 168, and you should get 114.

The area for the third shape is i dont even know because it doesnt give numbers unless your trying to find it with the letters but at least you got the first two

5 0
3 years ago
Read 2 more answers
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