2 years ago

11a + 12b = does it equal 23ab or not

Mathematics

1 answer:

Sonbull [250]2 years ago

4 0

Answer:

no it doesn’t.

Step-by-step explanation:

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Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was

Marizza181 [45]

Answer:

The raw score for his exam grade is 99.69.

Step-by-step explanation:

Given : The professor announced that the mean for the class final exam was 88 with a standard deviation of 7. Given Daniel's z score of 1.67.

To find : What is the raw score for his exam grade?

Solution :

The formula use to find the z-score is

$z=\dfrac{x-\mu}{\sigma}$

Where, z=1.67 is the z-score

$\mu=88$ is the means

$\sigma=7$ is the standard deviation

x is the raw score for his exam grade

Substitute the values,

$1.67=\dfrac{x-88}{7}$

$1.67\times 7=x-88$

$11.69=x-88$

$x=88+11.69$

$x=99.69$

Therefore, the raw score for his exam grade is 99.69.

7 0

2 years ago

Solve for x in the following equation: 4(-5x-6) = 4(9x+4)

Romashka-Z-Leto [24]

Answer:

$- 20x - 6 = 36x + 4 \\ 36x + 20x = - 6 - 4 \\ 56x = - 10 \\ x = \frac{ - 10}{56} \\ x = - 0.17571428$

4 0

1 year ago

Three numbers multiplied together give an answer of -12. The sum of two of the numbers is zero. What could the three numbers be?

Angelina_Jolie [31]

-2,2,3 since 2*-2*4 = 12 and -2+2=0

3 0

2 years ago

6=4y+2 what is the answer

blagie [28]

Answer: 1 = y
All you have to do is carry the 2 over and subtract it from 6 so then you just have 4=4y which will turn into 1=y

6 0

2 years ago

2d + 1 = 9<br><br> so d = what

weeeeeb [17]

Answer:

d is 4 :))

hope that helped

8 0

2 years ago

Read 2 more answers