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m_a_m_a [10]
3 years ago
8

If Jessie is 24 years younger than her mother and if the sum of their ages is 84, how old is Jessie?

Mathematics
2 answers:
8_murik_8 [283]3 years ago
8 0
J + m = 84
j = m - 24

m - 24 + m = 84
2m - 24 = 84
2m = 84 + 24
2m = 108
m = 108/2
m = 54...the mom is 54

j = m - 24
j = 54 - 24
j = 30 <==== Jessie is 30
Natali [406]3 years ago
5 0
Okay, to begin. Jessie is 24 years younger than her mother. So what we should first do is to subtract every possible age by 24 years. Which leaves us with 30, 6, and 4. Now if the sum of their ages is 84, we need to take all of the possibilities and add them to the other possibilities I've created.

30 + 54 = 84
6 + 30 = 36
4 + 28 = 32

Therefore, Jessie is 30 years old.
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andrew11 [14]
As you move from each place to the left one place, the value increases by 10. If you move right a place, the value decreases by 10.

5 0
3 years ago
Can i have some help
SVETLANKA909090 [29]

Answer:

b. m = 2, b = 4

Step-by-step explanation:

y = mx + b

m = slope and b = y-intercept

The slope is 2 cause it's going up 2 squares while only going to the right one square each time, so u could right 2/1 but it's not necessary so just 2. And the intercept is 4 because that's where the line intercepts the y-axis.

8 0
3 years ago
Tom was able to save 35% more this year than he did last year. If he saved $140 last year, how much did he save this year?
miskamm [114]

Answer:

$189

Step-by-step explanation:

35% of 140 = 49

140 + 149 = 189

8 0
2 years ago
A publisher reports that 344% of their readers own a particular make of car. A marketing executive wants to test the claim that
inysia [295]

Answer:

No, there is not enough evidence at the 0.02 level to support the executive's claim.

Step-by-step explanation:

We are given that a publisher reports that 34% of their readers own a particular make of car. A random sample of 220 found that 30% of the readers owned a particular make of car.

And, a marketing executive wants to test the claim that the percentage is actually different from the reported percentage, i.e;

Null Hypothesis, H_0 : p = 0.34 {means that the percentage of readers who own a particular make of car is same as reported 34%}

Alternate Hypothesis, H_1 : p \neq 0.34 {means that the percentage of readers who own a particular make of car is different from the reported 34%}

The test statistics we will use here is;

                T.S. = \frac{\hat p -p}{\sqrt{\frac{\hat p(1- \hat p)}{n} } } ~ N(0,1)

where, p = actual % of readers who own a particular make of car = 0.34

            \hat p = percentage of readers who own a particular make of car in a

                  sample of 220 = 0.30

            n = sample size = 220

So, Test statistics = \frac{0.30 -0.34}{\sqrt{\frac{0.30(1- 0.30)}{220} } }

                             = -1.30

Now, at 0.02 significance level, the z table gives critical value of -2.3263 to 2.3263. Since our test statistics lie in the range of critical values which means it doesn't lie in the rejection region, so we have insufficient evidence to reject null hypothesis.

Therefore, we conclude that the actual percentage of readers who own a particular make of car is same as reported percentage and the executive's claim that it is different is not supported.

3 0
3 years ago
Please help with 10!
Vladimir [108]

Answer:

x=5

y=4

Step-by-step explanation:

The sides with the 2 bars are equal  so

7x-4 = 31

Add 4 to each side

7x-4+4 = 31+4

7x = 35

Divide each side by 7

7x/7 = 35/7

x =5


The sides with 3 bars are equal

4y+8 = 24

Subtract 8 from each side

4y+8-8 = 24-8

4y = 16

Divide by 4

4y/4 = 16/4

y =4


8 0
3 years ago
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