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3 years ago

Can people help me with this

Mathematics

2 answers:

marishachu [46]3 years ago

6 0

3) 21,070
5) 600
6) 265
I couldn't see #4
Hoped this helped!

viva [34]3 years ago

5 0

3. 21,070

4. 105 pounds more

5. 24

6. 265 times for 5 seconds

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Find the slope of a line with equation 4y + x = 8.

uranmaximum [27]

Answer:

m = -1/4

Step-by-step explanation:

4y + x = 8

Arrange the equation in a slope intercept form y = mx+b, where m is the slope

4y + x = 8, subtract x from both sides

4y = -x +8, divide both sides by 4

y = -x/4 + 8/4 , simplify

y = -x/4 + 2, compare this to the general form y=mx+b and we see that the slope m = -1/4

4 0

2 years ago

Read 2 more answers

Given a right triangle with legs a, b and hypotenuse c, solve for b if a= 72 and c= 75

kotykmax [81]

Answer:

The answer is a. 21.

Step-by-step explanation:

We solve this question by using Pythagoras theorem to relate the sides of a right angled triangle.

Here,

Hypotenuse of the given triangle(c)=75

Two sides of right angled triangle are:

a=72

b=?

Then,

for a given right angled triangle abc,

Using Pythagoras theorem,

$c=\sqrt{a^{2} +b^{2} }$

Squaring on both sides,

$c^{2} =a^{2}+b^{2}$

or, $75^{2}=72^{2}+b^{2}$

or, $b^{2}=75^{2}-72^{2}$

or, $b^{2}=5625- 5184$

or, $b^{2} =441$

∴ $b=21$

So, the value of b is obtained to 21 by the use of Pythagoras theorem.

7 0

3 years ago

6x+8y=5 and 3x+4y=-2

Feliz [49]

ANSWER If you solve for x you get -4/3 y+5/6 If you solve for y you get -3/4x +5/8.

Step-by-step explanation

and then the second answer is

If you solve for x you get-4/3y +-1/2

If you solve for y you get -3/4x +-1/2

3 0

3 years ago

Which of the following is an irrational number?

Sladkaya [172]

Answer:

1.333...

Step-by-step explanation:

because irrational numbers can be repeating decimals, numbers that aren't perfect squares,and numbers that can not be in fraction form.

4 0

3 years ago

One sample has Aa Aa One sample has n 10 scores and a variance of s2 20, and a second sample has n 15 scores and a variance of s

siniylev [52]

Answer:

option (a) It will be closer to 30 than to 20

Step-by-step explanation:

Data provided in the question:

For sample 1:

n₁ = 10

variance, s₁² = 20

For sample 2:

n₂ = 15

variance, s₂² = 30

Now,

The pooled variance is calculated using the formula,

$S^{2}_{p} = \frac{(n_{1}-1)\times s^{2}_{1} +(n_{2}-1)\times s^{2}_{2}}{n_{1}+n_{2}-2}$

on substituting the given respective values, we get

$S^{2}_{p} = \frac{(10-1)\times 20 +(15-1)\times 30}{10+15-2}$

$S^{2}_{p}$ = 26.0869

Hence,

the pooled variance will be closer to 30 than to 20

Therefore,

The correct answer is option (a) It will be closer to 30 than to 20

4 0

3 years ago