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marshall27 [118]
2 years ago
7

I need some help with this.

Mathematics
1 answer:
Alenkasestr [34]2 years ago
7 0

Answer:

b is 16 d is 13

Step-by-step explanation:

ok is a baby girl that can I be happy

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Plz answer ASAP need help
Aleks04 [339]

Answer:

4 hours

Step-by-step explanation:

Let the number of hours = x.

Jay reads 55 pages per hour, so in x hours, he reads 55x pages.

After reading for x hours, he has 278 - 55x pages left to read.

Odhran reads 45 pages per hour, so in x hours, he reads 45x pages.

After reading for x hours, he has 238 - 45x pages left to read.

Since we want to know when they have the same number of pages left, we set the expressions equal and solve for x.

278 - 55x = 238 - 45x

Add 45x to both sides.

278 - 10x = 238

Subtract 278 from both sides.

-10x = -40

Divide both sides by -10.

x = 4

Answer: 4 hours

6 0
3 years ago
Which expression is equivalent to 2(3g - 4) - (8g + 3)?
kolbaska11 [484]

Answer:

Step-by-step explanation:

6 0
3 years ago
Which represents a quadratic function? ​
netineya [11]

Answer:

b is the answer

Step-by-step explanation:

f(x) = ax^2 + bx + c

3 0
3 years ago
Read 2 more answers
If Professor Wilson found that the test scores of his students had a variance of 4.4, what is the standard deviation? Type a num
malfutka [58]

Answer:

The standard deviation will be: 2.1        

Step-by-step explanation:

We know that standard deviation is basically the square root of variance.

Using the formula to calculate the standard deviation

s=\sqrt{s^2}

As

  • The variance =  s² = 4.4

so the standard deviation can be calculated as:

standard deviation =\sqrt{s^2}

                                 =\sqrt{\left(4.4\right)^}

                                  =2.1

Therefore, the standard deviation will be: 2.1                      

8 0
3 years ago
What are the roots of a quadratic equation?
borishaifa [10]
Roots is another name for the x-intercepts
8 0
3 years ago
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