Ella’s test grades in her history class are 89, 94, 82, 84, and 98. What score must Ella make on her next test to have a mean test score of 90?

needed on the next test

Answers

Answer 1
You need 6 test scores to find the mean test score.
So we need to find the average of all the test scores.
That means we have to add all the test scores and divide by 6 because there are 6 test scores. Let’s think the the s
89+94+82+84+98+x/6=90
(X is the score that ella must have)
447+x/6=90
447+x=90x6
447+x=540
x=540-447
x=93. (Ella must have 93 test scores to have a mean test score of 90)

Related Questions

How much did the two heaviest tomatoes weigh all together?

Answers

Answer:

1 and 6/8

Step-by-step explanation:

1/2 is equivalent to 4/8 when you multiply both the numerator and denominator by 2. So since there are two tomatoes that weigh 1/2 it would be 4/8+4/8= 1. Next you would add 3/8+3/8=6/8. So when you add 1 whole and 6/8 you get 1 and 6/8.

At a concert 6 out of the first 20 people who entered the
concert were wearing hats. Based on this information, if
there are 800 people at the concert, how many of these
people are expected to be wearing a hat?

Answers

Answer:

240 people

Step-by-step explanation:

6/20=x/800

800*6=20x

4800=20x

240=x

Therefore, you would expect 240 people to be wearing a hat

240 people because 6/20 is 30% and 240/800 is the same 30%

Write all the possible names for the quadrilateral. Then give the best name.

a.quadrilateral, parallelogram; parallelogram
b.quadrilateral, parallelogram, rhombus; rhombus
c.quadrilateral, trapezoid; trapezoid
d.quadrilateral, parallelogram, trapezoid; trapezoid


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

Rhombus, parallelogram, trapezoid, rectangle

C. quadrilateral, trapezoid; trapezoid

Step-by-step explanation:

This is a quadrilateral, it has 4 sides, it is not a rhombus because its sides aren't equal, it isn't a parallelogram because only two of its sides are parallel

A newly opened middle school’s enrollment is currently at 400 students. However, the school is implementing new programs and incentive systems to attract more students. They are projecting a 125% increase in enrollment for the upcoming school year.

How many students does the school project to have for the upcoming school year?


I DON'T need the answer, I need to know how you solved it, don't just look up the answer and say that.

Answers

500

Step-by-step explanation:

400 x 1.25 = 500 or just 400x0.25 +400

Answer:

900

Step-by-step explanation:

400x1.25=500

500+400=900

HELPLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

1. 70 2. 22 3. 55 4. 45 5. 65
gang gang gang gang ong no cap

Plz help ASAP I’ll give brainliest I’ll be so grateful but don’t copy off website:)

Answers

Answer:

You can find X in an equation by doing the opposite operation from both sides.  For example, let"s do 5x=25.  Since there is multiplication, we can use division to isolate the variable.  You would divide both sides by the coifeiccent to get x=5.

Step-by-step explanation:

BRAINLIEST IF CORRECT PLS HELP!! which triangle makes this statement true? DEF ≃

SCREENSHOTS INSERTED

Answers

Answer:

D.

Step-by-step explanation:

The angle's always help with triangles that are =

Find the price after tax for a $940 iPhone with a NJ sales tax of 6.625%.

Answers

Answer:

1002.275

Step-by-step explanation:

6.625 of 940 is 62.275

62.275 + 940 = 1002.275

Answer:

1002.275

Step-by-step explanation:

Help me out pls!!!!
Side note: Tell me your favorite Victorious character. If you say mine, i'll give you a brainliest.

Answers

mine is jade! she’s pretty and funny

PLS helped this is a timed question like due for 11:59

Answers

The answers are A and D

Answer: i would think A B and D

Need help with this please

no spam

Answers

Answer:

9/2

Step-by-step explanation:

hope it's correct..,,,,,,,,,

Answer:

a. 9/2

Step-by-step explanation:

72:16

9:2

: ratio can be in a form of fraction as well

plz help ...........

Answers

Answer:

use the Pythagorean theorem.

[tex] {15}^2 + {9}^2 = {c}^{2} \\ 30 + 18 = {c}^{2} \\ {48}^{2} = {c}^{2} \\ 6.9[/tex]

Here is an expression 3.2 evaluate the expression when t is 4 middle school math

Answers

Answer: Answer: C. 3.2 × 10^4

Step-by-step explanation: for this case the multiplication of the values with exponent are summed, as the exponent are the 6 and -3

6 - 3 = 3

this will be the exponent of the common value which is the 10.

after you only need to multiply 8 and 4 by separate the

8 * 4 = 32.

then we only need to place the values one by one

32 × 10^3

3 is the result of the sum of the exponent.

10 is the common value.

32 is the result of the product.

if we add another zero to the multiplication we get 3.2 and exponent finish with one more zero, then we get this result

3.2 × 10^4

because of that the C is the correct answer, keep in mind that the other answers do not apply correctly the rule of the exponent, because the rest of answer give us wrong answer with final result of the exponent.

Use the distributive property to write an expression that is equivalent to 8( a + 4 ). 8(a+4) = blank a + blank

Answers

Answer:

8a+32

8(a+4)= 8a+32

Hope it helps :D

Step-by-step explanation:

Answer:

[tex] \sf \: 8a + 32 [/tex]

Step-by-step explanation:

Now we have to,

→ Find the equivalent expression.

The property we use,

→ Distributive property.

The expression is,

→ 8(a + 4)

Let's simplify the expression,

→ 8(a + 4)

→ 8(a) + 8(4)

→ (8 × a) + (8 × 4)

8a + 32

Hence, the answer is 8a + 32.

please help me simplify this!

Answers

the answer is 125x^18
Answer: 125^18
Explanation:
5^3= 125
6x3= 18
So = 125^18

^ mean to the power of

Mason has a full bag of chocolate candies. He takes out all 38 of the green ones, which is 20% of the total number of chocolate candies in the bag. What is the total number of chocolate candies that Mason started with in the bag?

Answers

Answer:

190

Step-by-step explanation:

20 percent is 1 fifth of 100 percent so 38 would be 1 fifth. so multiply by 5

Answer:

it is 190

Step-by-step explanation:

hope it helps

please help really really need this it's on topic systems of equation

Answers

14.8 is what i got from the calculator, im not sure if that helps but ...

can someone pls help i don't understand:(

Answers

Answer:

A

Step-by-step explanation:

You can do this and get answer A

3:3=1 and 9:3=3

so the ratio is 1:3

think of 3:9 as a fraction. so if you reduce it, it would be 1:3. so your answer would be A) 1:3

What is the y-coordinate of point G on the coordinate grid below?
A.) 2
B.) 3
C.) 4
D.) 2.5

Answers

B: 3
coordinate: (x,y) (2,3)
B)3
(X,Y) ———> (2,3)

im so confused-

Of the two lights on Dexter Street, the probability of the lights being red is 20% for the first light and 30% for the second light. If a car is driving down Dexter Street, what is the probability that it does not get stopped at either light?

Answers

Just multiply the sum of the light

The probability that it does not get stopped at either light is 14/25.

We have given

Of the two lights on Dexter Street, the probability of the lights being red is 20% for the first light and 30% for the second light.

What is the formula for probability?

The probability of an event A is defined as the ratio of the number of favorable events that occurred in A /total number of events in a sample space

Red light for the first:

The Probability of the red light is 20 out of 100 so you would just find the difference which is 80%.

80/100

Red light for the second:

The Probability of the second red light is 30 out of 100 so you would just find the difference which is 70%.

70/100

The probability of not being stopped at either, multiply across and reduce.

[tex]80/100 * 70/100= 14/25[/tex]

Therefore, The probability that it does not get stopped at either light is 14/25.

To learn more about the probability visit:

https://brainly.com/question/24756209

Andre knows he wants a sandwich that has ham, lettuce, and tomatoes on it. He doesn’t care about the type of bread or cheese. How many of the different sandwiches would make Andre happy?

Answers

. He could easily make a ham sandwich, any Burger made with ham as well.

What is the distance between 2 points is called:
A. Density
B. Mass
C. Length

Answers

C. the distance is length

Answer:

C. Length

Step-by-step explanation:

The shortest distance between two points is the length.

Hope this helped!!!

Simplify the expression using positive exponents.

3^8/3^4

Answers

Check this out mate! GOOD LUCK

PLEASE HELP!!!! THIS IS TIMED!!!! HELP!!! PLEASE

Answers

Answer:D

Step-by-step explanation:

help. i need help ::>-<::

Answers

Answer:

This really isn't hard so for Allie the table is 2010/1 2011/2 2012/3 2013/4 2014/5

and for Jenna it is 2010/10 2011/11 2012/12 2013/13 2014/14 that is all for part A so for part B if Allie works for 6 years then Jenna will have worked 15

I hoped this helped you please give heart and 5 stars :-)

Hello! Please Help Me On This!

Answers

Answer:

What wingspan was seen most often? : 12cm

What wingspan was seen least often? : 11cm

How many butterflies had a wingspan greater than 13cm? : 5

How many butterflies had a wingspan less than or equal to 14cm: 12

Find the perimeter of the semicircular region. Round your answer to the nearest hundredth. 9 m The perimeter is about meters​

Answers

Answer:

about 23.14 m.

Step-by-step explanation:

1/2(pi)(d). d=9.  

so,

1/2(pi)(9)=4.5pim

then

4.5(pi)+9 is about 23.14m

Which sentence correctly translates the sentence shown here, -3 < 2?
A. Negative three is to the left of two on the number line.
B. Negative three is to the right of two on the number line.
C. Negative three and two are to the right of 0 on the number line.
D. Negative three and two are to the right of 0 on the number line

Answers

A is the correct answer

Identify the percent of change as an increase or decrease. Then find the percent of change. Round to the nearest tenth of a percent, if necessary.

125 invitation to 75 invites

32 pages to 28 pages

7 players to 10 players

72 people to 36 people

Answers

Answer:

1) 40% decrease 2) 12.5% decrease 3) 42.9% increase i don't have the last one lol

Step-by-step explanation:

Mary opened a savings account with a $700 deposit and a simple interest rate of 4.9%. If there are no other deposits or withdrawals, how much money is in the account after 7.5 years?

Answers

Take $700 divided by 100 and you get 7 so for every 1% =$7.00 you have 4.9% so $7.00x4.9%=34.3 34.3x7 1/2 years is an interest rate of 257.25 plus the original $70”
Answer: 957.25

Answer:

957.25

Step-by-step explanation:

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