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horsena [70]
3 years ago
15

If AC = 2x + 13 and DB = 4x - 1. Find DB

Mathematics
1 answer:
yulyashka [42]3 years ago
5 0
The answer is 7

2x+13=4x-1
14=2x
7=x
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The sum of 6 consecutive integers is 519. What is the third sequence?
Elenna [48]

Answer:

X=84

Step-by-step explanation:

let x be the first integer, then

:

x + (x+1) + (x+2) + (x+3) + (x+4) + (x+5) = 519

:

6x + 15 = 519

:

6x = 504

:

x = 84

4 0
3 years ago
Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women w
VikaD [51]

Since the p - value is less than significance level . So, we will accept the null hypothesis.

​(a) State the appropriate null and alternative hypotheses to assess whether women are taller today.

Definition of null hypothesis : The null hypothesis attempts to show that no variation exists between variables or that a single variable is no different than its mean. it is denoted

Alternative Hypothesis : In statistical hypothesis testing, the alternative hypothesis is a position that states something is happening, a new theory is true instead of an old one (null hypothesis).

We are given that The mean height of women 20 years of age or older was 63.7 inches.

So, null hypothesis :  H₀ : μ = 63.7

Alternative Hypothesis :  H₁ : μ > 63.7

b)The​ P-value for this test is 0.06.

The p-value represents the probability of getting a sample mean height of 20 years old women is  64.1 inches.

c) Write a conclusion for this hypothesis test assuming an alpha equals 0.10 level of significance.

p- value = 0.06

Since the p - value is less .

So, we will accept the null hypothesis

So,  

Hence The mean height is 63.7 inches

To learn more about hypothesis testing from the given link

brainly.com/question/12976831

#SPJ4

7 0
2 years ago
A guitar originally priced at $240 is on sale with a 30% discount. How much will you pay for the guitar?
N76 [4]

Answer:$168.00

With original price $240 and 30% discount,

Price after discount:<u> $168.00</u>

You saved: $72.00

3 0
3 years ago
Read 2 more answers
Jason drove 4/5 of the way to his destination if he drove 480 miles what is his total distance of his trip
algol [13]
4/5 of his total trip is 480...

4/5x = 480
x = 480 / (4/5)
x = 480 * 5/4
x = 2400/4
x = 600 <=== total distance is 600 miles
6 0
3 years ago
I did something wrong could you help?
posledela

Answer:

Slope = 1/2

y-intercept = 30

Equation : y = 1/2x + 30

D. 150 miles

Step-by-step explanation:

We can use the two visible points you marked on the graph.

They are (0,30) which is also the y-intercept and (20,40).

Calculate change of y over change of x.

10/20 or 1/2

So the slope is 1/2 and the y-intercept is 30.

Therefore, using y = mx + b form, the equation is y = 1/2x + 30

Then, to find how many miles you drove if the cost was $105, we can plug in 105 for y in the equation.

105 = 1/2x + 30

75 = 1/2x

x = 150

8 0
4 years ago
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