someone please help. this is the rest of my points. and it's worth 50% of my grade ​

Answer:

Tank is a tank and a cat is a cat.

Step-by-step explanation:

Answer: b

Step-by-step explanation:

Answer:

%6.8

Step-by-step explanation:

The five members of the Roberts family went to a high school soccer game. The total cost was $44.

They paid $10 less because they used a $10 coupon, how much was the cost per person?

members in the family = 5

total cost = $44

cost per person = 44/5

= $8.8

Now, they got $10 coupon so they paid $10 less.

therefore,

New total cost = $44-$10

= $34

New per person cost = $34/5

= $6.8

Answer:

they paid $8.80 cents per person without coupan but with coupon they paid $6.80

Step-by-step explanation:

i divied 44 by 5 to get $8.80 without cupon but woth coupan is subracted 34 divied by 5 and got $6.80.

Answer:

x=10

Step-by-step explanation:

x-1 = 9

add 1 on both side

x-1+1=9+1

x=10

Answer:

The answer would be 10

Step-by-step explanation:

1) Add 1 to both sides.

[tex]x = 9 + 1[/tex]

2) Simplify 9 + 1 to 10.

[tex]x = 10[/tex]

Hence, the answer would be 10.

x = 10

Answer:

ans

Step-by-step explanation:

possible ratios are 3:4,9:12 and 18:24

Mark me as a brain list please

Answer:

Step-by-step explanation:

12:9

8:6

4:3

16:12

24:18

48:36

Answer:

ds/dt = kN(N-S)

Step-by-step explanation:

Given

Total number of student = N

number of students who have seen the program = S

Number of students who have not seen the program = N-S

The product of the number of students who have seen the program and the number of students who have not seen the program = N(N-S)

If the rate of number of students who have seen a new television program increases at a rate proportional to the product of the number of students who have seen the program and the number of students who have not seen the program, then:

ds/dt = kN(N-S)

k is the proportionality constant

Answer:

Its also 30 degrees

Step-by-step explanation:

That shape is a vertical angle. This means that is 2 was 150 degrees, than 4 would also be 150 degrees. This means that if 1 is 30, then 3 is...... eh you get the idea. its 30 degrees.

P.S: Your welcome :)

Answer:

2 solutions

Step-by-step explanation:

Answer:

exact form: 5/3

decimal form: 1.6 (6 is repeating)

mixed number form: 1  2/3

Step-by-step explanation:

Answer:

1 2/3

Step-by-step explanation:

1 1/4 x  1 1/3 = 5/4 x 4/3 = (5x4)/(4x3) = 20/12 = 5/3 = 1 2/3

Answer:

1/4 because 25% is a quarter.

Answer:“ C ”

“month” on the x axis and “log” on the y axis

Answer:

X= -33/4

Step-by-step explanation:

Answer:

Includes Steps

Step-by-step explanation:

3/4x-7 =3(1/6x+1)

3/4x-7=3/6x +3

1/4x=10

x=40

Answer:

increase

Step-by-step explanation:

....................

Answer:

Percent Increase

Step-by-step explanation:

Percent Increase because if the necklace was bought for $260, and was marked up by 30%, it means it was originally a lower price, that was multiplied by 130%.

Explanation by algebra:

x + 0.30x = 260

1.3x = 260

x = 260/1.3

x = 200

The necklace was originally $200, and it was marked up by 30$, making it $260.

Answer:

9/17

Step-by-step explanation:

there are 17 marbles in total 9 of them are blue therefore, 9/17 is the correct answer

Answer:

1. The 90% confidence interval for the true difference between average lifetimes for brakes using Compound 1 and brakes using Compound 2 is (-2411.84, -1332.16).

2. The point estimate for the true difference between the population means is of -1872.

Step-by-step explanation:

Before building the confidence interval, we need to understand the central limit theorem and subtraction between normal variables.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction of Normal Variables:

When two normal variables are subtracted, the mean is the subtraction of the means while the standard deviation is the square root of the sum of the variances.

A sample of 212 brakes using Compound 1 yields an average brake life of 47,895 miles. The population standard deviation for Compound 1 is 1590 miles.

This means that [tex]\mu_1 = 47895, \sigma_1 = 1590, n = 212, s_1 = \frac{1590}{\sqrt{212}} = 109.2[/tex]

A sample of 180 brakes using Compound 2 yields an average brake life of 49,767 miles. The population standard deviation for Compound 2 is 4152 miles.

This means that [tex]\mu_2 = 49767, \sigma_2 = 4152, n = 180, s_2 = \frac{4152}{\sqrt{180}} = 309.47[/tex]

True difference between average lifetimes for brakes using Compound 1 and brakes using Compound 2.

This is the distribution 1 - 2. So

[tex]\mu = \mu_1 - \mu_2 = 47895 - 49767 = -1872[/tex]

This is also the point estimate for the true difference between the population means, which is question 2.

[tex]s = \sqrt{s_1^2+s_2^2} = \sqrt{109.2^2+309.47^2} = 328.17[/tex]

90% confidence interval

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.9}{2} = 0.05[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.05 = 0.95[/tex], so Z = 1.645.

Now, find the margin of error M as such

[tex]M = zs = 1.645*328.17 = 539.84[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is -1872 - 539.84 = -2411.84

The upper end of the interval is the sample mean added to M. So it is -1872 + 539.84 = -1332.16.

The 90% confidence interval for the true difference between average lifetimes for brakes using Compound 1 and brakes using Compound 2 is (-2411.84, -1332.16).

Answer:

144 Sq

Step-by-step explanation:

The area of the rectangle formula is Length x Width. Given 4 ft and 3 ft, we can find the area. The screen would be 12 Sq. Feet since the question is asking for inches we must now convert this.

Answer:

x=13

Step-by-step explanation:

3(x-10)=x+4

3x-30=x-4

3x=x+26

2x=26

x=13

Answer:

C

Step-by-step explanation:

7.67 is greater than 7.66666...

Answer:

-10x-15

Step-by-step explanation:

So first we start off with 5(-2x-3)

Next, we distribute the 5 to the -2x to get -10x.

Next, we distribute the 5 to the -3 to get -15.

Therefore,

-10x-15 is correct

Answer:

-10x-15

Step-by-step explanation:

It's 10x-15, because you just need to simplify it.

It is the same thing as (5 x (-2x)) - (5 x 3), if you use the distributive property.

that is the same as -10x-15

9514 1404 393

Answer:

  after 2 seconds

Step-by-step explanation:

We want to find t such that h = 0.

 0 = -16t² +8t +48

  0 = 2t² -t -6 . . . . . . . divide by -8

  0 = (t -2)(2t +3) . . . . factor

The only positive solution is t = 2, which makes the first factor zero.

Stella will land in the water at t = 2 seconds.

Answer:

Point J - Quadrant I

Point F - Quadrant II

Point P - Quadrant III

Point T - Y-axis

Step-by-step explanation:

Answer:

F: Quadrant II

J: Quadrant I

P: Quadrant III

T: y-axis

Step-by-step explanation:

Brainliest Please!!

Answer:

Step-by-step explanation:

Let us begin by just getting the equation of the circle first.

(x - 4)^2 + ( y - 2)^2 = 5^2

(x - 4)^2 + ( y - 2)^2 = 25

Now I'm going to graph that equation and discuss it here.

Answer:

ans is 504m²

Step-by-step explanation:

given = side of square=18m

height of triangle=12m

formula= surface area of square + surface area of 4 triangles

surface area of square = 4 × length

= 4×18

=72m²

surface area of triangle = 1/2×base ×height

= 1/2×18×12 ( the base lies on the side of the squre so the base is also 18m)

= 108m²

therefore, surface area of 4 triangles = 4×108=432m²

therefore the surface area of the given figure= surface area of aquare + surface area of the 4 triangles

surface area of square= 72 +432

=504m²

9514 1404 393

Answer:

  13

Step-by-step explanation:

4 m is 400 cm, so the number that can be cut is ...

  (400 cm)/(30 cm/piece) = 13 1/2 pieces

13 pieces can be cut that are 30 cm long.

Answer:

13 whole pieces

Step-by-step explanation:

4m=400cm

400cm÷30cm=13.333333

you can't get 0.33333333(goes on forever) of a ribbon so its 13

hope this helps:)

Answer:

nerd is 18

Step-by-step explanation:

xsas

Answer: $1,947.75

Step-by-step explanation: First, the mark up is 110% of the total, which is $875. 110% of 875 is $962.50, which you add to the total ($875) since it is mark up. $962.50 + $875 = $1837.50. Finally, 6% of $1837.50 is $110.25 so you add this to your new price ($1837.50) since the 6% is the sales tax. $1837.50 + $110.25 = $1947.75

Answer:

-25/3, or - 8 1/3

Step-by-step explanation:

many steps

2/3 + - (6+3x)/1 +3 (x-1)

- (6+3x)/1 *3/3* 2/3+ -(6+3x)/1 * 3/3 + 3 (x-1)

- (6+3x/1* 3/3* 2/3+ -(6+3x)*3/3 +3(x-1)*3/3

2-(6+3x)*3+3(x-1)*3/3

2+ (-1*6 - (3x)0 * 3+3 (x-1)*3/3

-1*6*2+(-6-(3x))*3+3(x-1)*3/3

3* -1 *2 + (-6-3x) *3+3 (x-1) *3 / 3

3*-1 * 2+(-6-(3x)) *3+3(x-1)*3/3

2-6*3x*3+3(x-1)*3/3

-6*3*2-18-3x*3+3(x-1)*3/3

3*-3*2-18-9x+3(x-1)*3/3