MATHEMATICS HIGH SCHOOL

One book costs one pound ninety five pence. How much does six books cost

Answers

Answer 1

Answer:

All you have to do is times 195 by 6:

195

x 6

-------------

1 1 7 0

Now make that back into £11.70

Answer 2

Answer: 1.95*6=11.70 the answer is 11 pounds 70 pence

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Solve equation 2x-5=20-x
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Which expression is equal to the expression below?
(6•9)^5

Answers

Answer

A

Explanation

What are the roots of the equation x2 + 4x - 16 = 0?

Answers

see attached picture for answer

On the distant planet Cowabunga, the weights of cows have a normal distribution with a mean of 483 pounds and a standard deviation of 70 pounds. The cow transport truck holds 5 cows and can hold a maximum weight of 2840. If 5 cows are randomly selected from the very large herd to go on the truck, what is the probability their total weight will be over the maximum allowed of 2840

Answers

Answer: 0.0033

Step-by-step explanation:

Let x be a random variable that denotes the weights of cows.

Given: $\mu = 483,\ \sigma=70$

maximum weight can be hold= 2840 pounds.

Mean weight = $(2840)/(5)$ = 568 pounds

The probability their total weight will be over the maximum allowed of 2840

= $P(X>2840)$

$P((x-\mu)/((\sigma)/(√(n)))>(568-483)/((70)/(√(5))))\n\n=P(z>2.715)\n\n=1-P(z<2.715)\n\n=1-0.9967=0.0033$

Hence, the required probability = 0.0033

Two rectangles are similar. One has a length of 12 cm and a width of 9 cm, and the other has a width of 8 cm. Find the length of the second rectangle. Round to the nearest tenth if necessary.

Answers

The length of the other rectangle is 10.67 centimeters.

What are similar rectangles?

Those rectangles look the same but are different in size.

And in similar rectangles,

the corresponding sides are in proportion to each other and the corresponding angles are equal to each other.

Given:

The two rectangles are similar.

One has a length of 12 cm and a width of 9 cm,

and the other has a width of 8 cm.

Let the length of the other rectangle is n cm.

The corresponding side has a constant ratio.

So, 12/n = 9/8

9n = 12(8)

n = 12(8)/9

n = 10.67

Therefore, the required length is 10.67 centimeters.

To learn more about similar rectangles;

brainly.com/question/14926756

#SPJ3

Answer:10.7cm is the answer

Step-by-step explanation:

PLZ HELP ALGEBRA!!!!
AND PLZ SHOW WORK

Answers

Answer:

Step-by-step explanation:

n is the number of times the interest compounds per year. If the interest in this problem only compounds once per year ("annually"), then n = 1 and you'd be just as well off to use the formula:

$A=P(1+r)^t$

When n = 1, r/n is just r. But I'll show you using the formula they want you to use; it's the same anyways.

For us, P = 500, r = .015, n = 1. Filling that into the formula:

$A=500(1+(.015)/(1))^((1)(t))$ which simplifies down to

$A=500(1+.015)^t$ and

$A=500(1.015)^t$ (see what I meant about not having to use the formula with "n" in it if n 1?)

That formula is the answer to part a. For part b, we are to find how long it takes for the account to reach $800. $800 goes in for A:

$800=500(1.015)^t$

Begin by dividing both sides by 500 to get:

$1.6=(1.015)^t$

The only way to bring that t down from its current exponential position is to take the natural log of both sides. I will do that and at the same time apply the power rule for logs which says the exponent will come down out in front of the log:

$ln(1.6)=tln(1.015)$

Divide both sides by ln(1.015):

$(ln(1.6))/(ln(1.015))=t$

Do this on your calculator to find that

t = 31.5 years

What is the value of the function y = 3x - 1 when x = –1?A.
–8

B.
–4

C.
2

D. 6

Answers

y=3x-1
y=3(-1) - 1
y= -3-1
y=-4
the answer is B.-4

B
There is your answer

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A local clothing shop is marking down all of its summer clothes by 75%. sarah would like to purchase a swimsuit that is originally priced at $80. when she gets to the register, she signs up for a loyalty cars that saves her an additional 10%. how much did she spend on the swimsuit and what total percent did she receive off?a. Find the markdown price of the swimsuit.b. Then, find the markdown of the loyalty card.c. Subtract to find the final price.