Sandra has 4 math tests this marking period. She recieved 90%, 87%, and 92% on the first 3. with is the minimal score she needs on her last test in order to average at least 90% in math class?

Answers

Answer 1

The minim she can get for a score is a 90%

Answer 2
Let the unknown score be x
(Sum of the scores)/(number of tests) = avg
(90+87+92+x)/4 = 90
(269+x)/4 = 90
269 + x = 90*4
269 + x = 360
x = 360-269 = 91

So Sandra needs a minimal score of 91% on her last test in order to average at least 90% in math class

I hope this helps :)

Related Questions

What is Pt=3x+4 and tq=5x-6

Answers

X=6 I believe answer

I’m not really sure how to do this

Answers

Answer:

im sorry about that bro

Step-by-step explanation:

im not smart as well

plsss helpppp will mark brainliest!!

Answers

Answer:

D. 2¹⁵/4¹⁰

Step-by-step explanation:

(2³/4²)⁵ = 1/64

A. 2⁸/4⁷ = 1/128

B. 2⁵/4⁴ = 1/16

C. 2⁶/4⁶= 1/128

D. 2¹⁵/4¹⁰= 1/64

SO (2³/4²)⁵ = 2¹⁵/4¹⁰

Pleaseeeeeeeeeeeeeeeeeeee

Answers

Answer:

∠DAB = 68

Step-by-step explanation:

∠DAB we need to find this

∠DAB = ∠C (vertically opposite angles are equal)

∠DAB = 68

(20 points)I need help please

Answers

[tex]\text{Suppose the width of the rectangle is }x\text{ cm}[/tex]

[tex]\text{then the perimeter can be expressed as}[/tex]

[tex]2(24+x)=72[/tex]

[tex]24+x=36[/tex]

[tex]x=12[/tex]

[tex]\text{Therefore the area of the rectangle is }24\cdot x=24\cdot 12=288\text{ cm}{}^2[/tex]

Answer: Solution,

length (l) = 24 cm

perimeter (p)= 74 cm

Area (A) = ?

we know,

P = 2(l + b )

74 = 2( 24 + b)

74 = 48 + 2b

2b = 74 - 48

2b = 26

b= [tex]\frac{26}{2}[/tex]

b = 13

now,

A = l*b

   = 24 * 13

   = 312 cm square

Therefore, the area of the rectangle is 312 cm square.

pls some help im so stuck im stuck as a cat in a tree dude plz help i
ill give u 100 pointes

Answers

Answer:

It's the positive i, no matter what i is equal to.

is fraction a linear equation​

Answers

Answer:

NO

Step-by-step explanation:

We need more than two operations to solve a linear equation . If an equation contains fractions, multiply both sides of the equation by the least common denominator (LCD) to clear fractions.

Hannah but 3.4 pounds of apples she paid $.89 per pound how much did Hana pay for apples

Answers

Answer:

3.026 $

Step-by-step explanation:

3.4 × 0.89 = 3.026 $

[17 - 7] × 6 + 2 + 56 - 8

Answers

Answer:

110

Step-by-step explanation:

[17 - 7] × 6 + 2 + 56 - 8

10 × 6 + 2 + 56 - 8

60 + 2 + 56 - 8

62 + 56 - 8

118 - 8

110

Answer:

110

Step-by-step explanation:

[17 - 7] × 6 + 2 + 56 - 8

(10) x 6 + 2 + 56 - 8

60 + 2 + 48

62 + 48

110

Decide!!!!!!!!!!!!!!

Answers

Answer:

547

Step-by-step explanation:

The minute hand hits the 0 minute once each hour. This results each hour to become 61 minutes.

Number of hours from Monday 00:01 to Friday 07:30 is 4*24 + 7.5 = 103.5

Extra time considering defective clock (full hours):

103 minutes = 1 hr and 43 min

Alarm to be set at:

07:30 - 1:43 = 6:00 - 0:13 = 05:47

The answer is:

5*100 + 47 = 547

How to solve -7+7s-3s-5-6-5s

Answers

Question:-

How to solve -7+7s-3s-5-6-5s

Answer:-

→ -7+7s-3s-5-6-5s

→ -7 -5 -6 + 7s-3s-5s

→ -18 - 1s

The answer is -18-1s


Tom drives at a steady speed covering 1 mile every minute. He comes to a
section of road where the speed limit is 50 mph.
Is he over the speed limit? Give a reason for your answer.

Answers

Answer:

Yes he is over the speed limit.

Step-by-step explanation:

1 mile per minute * 60 minutes (1 hour) = 60 miles per hour

60 > 50

The sum of 48 and itself,it's half and half of the half is added to 18​

Answers

48+48+24+12+18= 150

The ratio of a basketball player's completed free throws to attempted free throws is 4 to 7. If she completed 12 free throws, find how many free throws she attempted.
a. 3 free throws
b. 7 free throws
c. 21 free throws
d. 4 free throws​

Answers

Answer:

well for Evey 4 completed throws she takes 7 throws

with this ratio we get that;

it's 4:7

there fore

for 12 completed free throws she would take 21 free throws

option c is the answer

hope it's helpful

Answer:

21

Step-by-step explanation:

FreeThrows: FT

Attempted Throws: AT

FT/AT=4/7

12/AT=4/7

84/4=AT

AT=21

Find X. I need help ASAP pls

Answers

Answer:

Step-by-step explanation:

Evaluate using inverse operations...

9x + 8 = 27

Answers

Answer:

9x+8=27

9x=27_8

9x=19

9 9

x=2.111111111111

Answer:

2.111

Step-by-step explanation:

27-8=19

9x÷19

x=2.1111

unit rate 18 people in 3 vans​

Answers

Answer:

6:1

Step-by-step explanation:

6 people per van

Answer:

6:1

Step-by-step explanation:

Convert 120 Ibs to kilograms

Answers

Answer:

54.431 kilograms

Step-by-step explanation:

don't have step by step but 1kg is 2.205lbs

Solve the equation:
5 + 4x - 7 = 4x - 3-X

Answers

Answer:

1 = -x

Step-by-step explanation:

group like terms together so

this 5 + 4x - 7 = 4x -3 - x

becomes this 5 - 7 + 3 = 4x -4x -x

then simplify     1 = - x  

I really need help with this math problem and please explain (-1) + (-2 2/5) =

Answers

Answer: -3 2/5

Step-by-step explanation:

When both integers are negative, you can treat them the same as positive numbers and add a negative sign to your final sum.

1+2 2/5 (or 2 4/10 or 2.4) is equal to 3 2/5. So (-1)+ (-2 2/5) is equal to -3 2/5, or -3.4.

abc is a triangle in which ab=5cm, ca=13cm and bc=12 cm. calculate sina, cosc, tana, cotc, seea and cosec

Answers

SinA=12/13
CosC=12/13
TanA=12/5
CotC=1/5/12
SecA=1/5/13
CosecC=1/5/13

Profit is always calculated as revenue minus expenses. If a company's expenses were $10 million, write an equation that expresses profit, P, (in millions of dollars) in terms of revenue, R, (in millions of dollars). Then, determine the profit when revenue is $25 million.

a. P= 10-R; $15 million
b. P=R-10; $15 million
c. P=R-10; $35 million
d. P=10-R$35 million
Please select the best answer from the choices provided​

Answers

Answer:  B

Step-by-step explanation:

P=R-$10MM

P = ($25MM)-$10MM

P = $15MM

I need help with #21 ASAP.. I need to get it done…. Show step by step please help me with it.. I need to get it done tonight it is passed due

Answers

Step-by-step explanation:

21.

1, 2, 4, 8, 16, 31, ... , ....

by using the formula, we can find :

T7 = [7⁴ - 6(7)³ +23(7)² - 18(7) +24] / 24 =

(2401 - 2058 + 1127 - 126 +24) / 24 =

1368/ 24 = 57

T8 = [8⁴-6(8)³+23(8)²-18(8)+24]/24 =

(4096-3072+1472-144+24)/24 =

2376/ 24 = 99

Evaluate the function.
f(x) = -2x2 + 7
Find f(-5)

Answers

-2(-5)^2 + 7
-2 • 5^2 + 7
-2 • 25 + 7
-50 + 7
-43

5x -4= 4x please help me

Answers

[tex]5x-4=4x\\\\5x-4x=4\\\\\huge\boxed{x=4}[/tex]

Answer:

4=x

Step-by-step explanation:

5x-4=4x

-4=-x

4=x

I need help please!!

Answers

Answer:

(-2, 3)

Step-by-step explanation:

For x-4 you go left four places and y+6 go up 6 places

Answer:

(-2, 3)

Step-by-step explanation:

Point P has coordinates (2, -3).

The translation is (x - 4, y + 6) which means subtract 4 from the x-coordinate and add 6 to the y-coordinate.

The x-coordinate of point P is 2. Subtract 4 from it, you get -2.

The y-coordinate of point P is -3. Add 6 to it to get 3.

The coordinates of the translated point are (-2, 3).

The graph of y = f(x) is graphed below. What is the end behavior of f(x) ?

Answers

Answer:

The first option, as x approaches infinity, y approaches infinity and as  x approaches negative infinity, y approaches negative infinity

Step-by-step explanation:

I know the answer, I'm just confused on what to put for explore, plan, solve, and examine!

Joseph earned $53 the first week he worked at Jim’s Candy Store and $62 the next week. How much did Joseph earn his first two weeks?
Explore:
Plan:
Solve:
Examine:​

Answers

Answer:

Explore - ??? (What are you suppose to put for that (Add comment))

Plan - First week - 53 Second week - 62

Solve - 53 + 62 = 115

Examine - (Use a graph to see the rise?)

Step-by-step explanation:

2.
You drop a ball from a height of 1.5 meters. Each curved path has 74% of the height of the previous path. a. Write a rule for the sequence using centimeters. The initial height is given by the term n = 1. b. What height will the ball be at the top of the sixth path?

A. A(n) = 150 • (0.74)^n–1 ; 33.29 cm
B. A(n) = 1.5 • (0.74)^n–1 ; 0.33 cm
C. A(n) = 150 • (74)^n–1 ; 332,850,993,600 cm
D. A(n) = 0.74 • (1.5)^n–1 ; 5.62 cm

Answers

Answer:

A. A(n) = 150 • (0.74)^n–1 ; 33.29 cm

Step-by-step explanation:

This is a geometric sequence.

a%5B1%5D=1.5m=150cm, r=0.74

The formula is

a%5Bn%5D=a%5B1%5Dr%5E%28n-1%29

Just substitute a1 = 150cm and r = 0.74

a%5Bn%5D=150%280.74%29%5E%28n-1%29

That's the rule.

For the second part, substitute n = 6

cm.

Probability maths Please help

Answers

Answer:

it means maybe or either

Other Questions
explain of speration of powers and checks and balances for the U.S political system Write the slope-intercept form of the equation of theline through the given point with the given slope.10. through: (5, -3), slope -4/5. Choose the function whose graph is given by:AAAAAhtO A. y= cos(2x)O B. y= cos()O c. y = cos(4x)O D. y= cos(54)SUBMITPlease help someone help with this, asap ty. Which sentence best explains the significance of the novel's title. The Grapes of Wrath? What's an antonym for satellite. PLEASE HELP ITS DUE AT 9:30 ( its 9:10) Solve 4x9y=13 for yPlease help Please help! Will mark brainliest! ^^ What was the intended purpose of the First Continental Congress, and how did it seek to achieve its goals? HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Primary memory is and . ~ Volatile ~ Permanent ~ Not Volatile ~ Not Permanent Hi how can I graph this if it dosn't have a slope?1. y = (2/3)x - 1 y = -x + 4 Which is an example of an exothermic process?A. splitting of water moleculeB. formation of glucose from carbon dioxideC. condensation of steamD. cooking of an eggE. evaporation of water What does tyranny mean Help thank you Which ordered pair is a solution to the system of inequalities?{y>2x+y lp bng bin thin v tm tp gi tr ca y=2x-4 Question 1The first ten amendments to the US. Constitution are designed to protect which principle of American government? 9. What types of tissue make up the human skeleton?..A. Molecules, organs and systemsB. Bones, cartilage, and ligamentsC. Cells, tissue, and organsD. None of the above A homogeneous mixture is a composition of two or moreimpure substances in a definite proportion, displaying non-uniform characteristics.TRUEFALSE partes son de un estadio de futbol I NEED THE ANSWER QUICKKK!!!Match each step of the scientific method with its matching example.Match Term Definition Analysis A) Based on what other scientists have done, algae life cycles are affected by light. Research B) Under the same temperature and water conditions, green algae is grown under natural light, blue light, and green light. Conclusion C) The data recorded in the experiment supports the hypothesis about how algae reproduce. Experiment D) The growth of green algae is recorded every day for several weeks and compared.