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3 years ago

Let's evaluate 3x + 4 when x=5

1 answer:

6 0

It is simple
Step 1) substitute x = 5 into the equation
3x +4
3(5) + 4 gives you 3 times 5 + 4
The answer is 15 + 4 which is 19

Now substitute a and b into the equation 3(a) + 4(b) when the a = 6 and b = 5
Hereby 3(6) + 4(5)
3 * 6 = 18 and 4* 5 = 20
18 + 20 = 38
The answer is 38

Now finally
Substitute a and b Into the equation
3(3) + 4(6)
9+ 24 = 33

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Four less than a number is more than 15.<br> PLS HELP ME I WILL GIVE 15 POINTSSS

dimulka [17.4K]

Answer: x - 4 > 15

Step-by-step explanation:

have a good day :)

7 0

3 years ago

If RS =14 and ST=9 , find RT. Use the number line below<br><br> RT=

Bingel [31]

Answer:

Step-by-step explanation:

RS = 14

ST = 9

That means S is in the middle of R and T because it has two line segments associated with it

RT = RS + ST

RT = 14 + 9

RT = 23

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

8 0

2 years ago

an item regular price of $40 . Kira bought it on sale for 65% off the regular price. How much did he Kira pay?

inna [77]

The answer is $14 because 65% of $40 is 26 and 40-26=14

8 0

3 years ago

A senior class of 420 students will rent buses and vans for a class trip. Each bus can transport 50 students and 3 chaperones an

kykrilka [37]

Answer:

37 buses and 1 van.

Step-by-step explanation:

The cost to rent a van is $1200 for 50 students and 3 chaperones, while a bus for 10 students and a chaperone is $100 .

The cost of renting buses for 50 students is $500

What we do is rent 37 buses and 1 van

37 buses will take in 370 students with empty 2 spaces in 2 buses for chaperones since the chaperones are 36.

Then rent 1 van to take in 50 students and 1 chaperone.

The total cost here will be

$3700 + $1200 = $ 4900

This will help to safe cost.

4 0

3 years ago

Eagle Outfitters is a chain of stores specializing in outdoor apparel and camping gear. They are considering a promotion that in

Zina [86]

Answer:

Step-by-step explanation:

Assuming that:

the promotion will be considered to be a success if more than 10% use the coupons received.

and coupons are sent to 100 credit card customers.

Then, the null hypothesis and alternative hypothesis is:

$\mathbf{H_o:p\le 0.10} \\ \\ \mathbf{H_a:p> 0.10}$

sample size n = 100

Using the eagle file data;

the no of people in the sample who use the coupon = 13

then,

$\hat p = \dfrac{x}{n}$

$\hat p = \dfrac{13}{100}$

$\hat p = 0.13$

Test statistics can be computed as:

$Z = \dfrac{\hat p - p }{\sqrt{\dfrac{p(1-p)}{n}}}$

$Z = \dfrac{0.13 - 0.10 }{\sqrt{\dfrac{0.10(1-0.10)}{100}}}$

$Z = \dfrac{0.03 }{\sqrt{\dfrac{0.09}{100}}}$

$Z = \dfrac{0.03 }{\sqrt{0.0009}}$

$Z = \dfrac{0.03 }{0.03}$

$Z = 1$

$P-value = P(Z > 1) \\ \\ P-value = 1 - P(Z < 1 ) \\ \\ P-value = 1 - 0.8413 \\ \\ P-value = 0.1587 \\ \\$

At ∝ = 0.05

Since, P-value is greater than ∝, then we fail to reject $\mathbf{H_o}$ .

Therefore, Eagle should not go with the promotion; a larger sample should be taken.

3 0

3 years ago