Aldo's scores on four tests are 88, 85, 100, and 86. What must the score be on the fifth test for her average to be 90?

Answer:

It might be C if im wrong sorry

Step-by-step explanation:

Answer:

1 and 3

Step-by-step explanation:

80 (mph) × 2 (hours) = 160 (miles)

60 (mph) × 2 (hours) = 120 (miles)

$180

Step-by-step explanation:

30 x 6 = 180

Answer:

180 it is basic multiplication

Step-by-step explanation:

Answer:

1.360 or 1.36 .....................

Answer:

C=120 degrees

Step-by-step explanation:

We can use the law of cosines to find an angle when we have all three sides

(7)^2 = (5)^2 + (3)^2 -(2)(5)(3)Cos(C)

49 = 25 +9 -30Cos(c)

49= 34 -30Cos(c)

15 = -30Cos(c)

Cos(c) = -1/2

C=120 degrees

Answer:

y+4=2(x+1)

Step-by-step explanation:

y-y1=m(x-x1)

y-(-4)=2(x-(-1))

y+4=2(x+1)

Answer:

y+4=2(x+1)

Step-by-step explanation:

point slope form

(y-y1)=m(x-x1)

m: slope = 2

(x1,y1) = (-1,-4)

(y+4)=2(x+1)

Answer:

the second option, a=3 b=3 c=5

Step-by-step explanation:

first I would change them both into an improper fraction:

9/2 divided by 5/4

dividing is the same thing as mulitiplying by the reciprocal of the second number. so you would mulitply 9/2 x 4/5 = 36/10 and then you simplify back to a mixed number 3 6/10, 6/10 can be reduced so the final answer is 3 3/5.

Answer:

40 seconds

Step-by-step explanation:

The answer is 40 because the y axis would be altitude and the x axis would be time. As altitude decreases time increases. When the line crosses the x axis then that is your answer shown above.

Answer:

2.) Infinitely many solutions

3.) No solutions

Step-by-step explanation:

To solve systems of equations graphically, you need to find where they intersect

2.) First put each equation in the form y=mx+b

x-y=6 -> y= x-6

2x=12+2y -> y= x-6

Then, graph each line

Since we have the same equation, the lines are on top of each other so there are infinitely many solutions as they intersect everywhere.

To check, plug a point in from the graph into both equations and you should get 0=0

3.) First put each equation in the form y=mx+b

1/2x-y=4 -> y=1/2x-4

2y=x+6 -> y=1/2x+3

Then, graph each line

Since the lines have the same slope but a different y intercept, the lines are parallel. Therefore, there are no solutions as they do not intersect.

To check your answer, you would one equation as the y in the other equation.

2(1/2x-4)=x+6, then solve for x

Then plug that x into the original equations, and you'll see they are not equal. Hope that helps!

Answer:

10.8 in.; CE = √(82 + 62 + 42)

Step-by-step explanation:

I think this hint helps you

have a great day ahead

x = 1/5Y

I hope this helped! please mark brainliest and vote 5 stars >:)

Answer:

2

steps

7.50+2.50=10.00

10.00+2.50=12.50

so you have 2 cups of food u can buy

Step-by-step explanation:

[tex] {b}^{2} = {16}^{2} + {12}^{2} \\ {b}^{2} = 256 + 144 \\ b = 20[/tex]

Answer:

the third one (-2,1)

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

so solving the first one we get

y=2x+5

and the second one we get

y=5x+10+1

y=5x+11

substiuting we get

2x+5=5x+11

3x=-6

x=-2

and y= 1

so it would be C

if my answer helps please mark as brainliest.

Answer:

-3

Step-by-step explanation:

3 x 6 - 42/2 =

18 - 42/2 =

18 - 21 =

-3

Answer:

18-21=x

Step-by-step explanation:

18-21=x

x= -3(this is just extra)

Answer: 24

Step-by-step explanation:

Because if you do 4.80 times 5 you’ll get 24 because each orange cost $4.80

Answer:

the cost of 5 oranges would be $2.00

Step-by-step explanation:

To solve this we need to find the unit rate and when we do this we can solve this problem.  To find that we need to divide 4.80 by 12 once we do that we just have to multiply that number by 5 to get our answer, when you divide you'll get 0.4 and then multiply that by 5 and you'll get $2.00.

Answer: $79.95

Step-by-step explanation:

65 × 0.18 = 11.7

65 × 0.05 = 3.25

11.7 + 3.25 = 14.95

14.95 + 65 = $79.95

Answer:

25.13 square meters

Step-by-step explanation:

The formula for finding the circumference of a circle is πd or pi times the diameter

Diameter = 8 meters

Pi = 3.14

3.14 times 8 = 25.13

Answer:

-5.4 + 2.52h

Step-by-step explanation:

Tia earns $693 in 36 hours

Answer:

6.65

Step-by-step explanation:

First, I simplified -1 3/4 to a decimal which is -1.75.

Then, I multiplied -1.75 and -3.8 and got 6.65

Answer:

all students each grade, its a better representation of the wants of the whole group being affected

Step-by-step explanation:

Answer:

C: All students in each grade

Step-by-step explanation:

It cant be all teachers in the school since at the beginning of the question it says "whether the students" not whether the teachers plus it is not a mxed variety, so this question was sort of trying to catch you off guard

The reason why is if you pick all the boys in each grade then it wouldnt really be random since your picking the gender you want to answer it has to be a mixed variety all ages all genders and so on

Yes! All students in each grade would be a mixed variety since its all ages, all genders, and all grades this answer was a little obvious since they sort of gave you the answer saying "The social studies teacher wants to know whether the students in the entire school"

All students in the social studies club wouldnt be a good answer either since (as i said before) it has to be random and your picking who you want to answer plus since there in the club with the social studie steacher they are more likely to pick what she wants to pick

So the answer would be C: All students in each grade

Answer:

Step-by-step explanation:

[tex]equation: \frac{x}{140} = \frac{30}{100} \\reduced: 100x = 4200\\ solved: \frac{100x}{100} = \frac{4200}{100} \\x = 42[/tex]

An equation is formed of two equal expressions. The equation that shows the relationship 30% of 140 is x is x=0.30×140.

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given that 30% of 140 is equal to x. Therefore, we can write,

[tex]\text{30\% of 140} = x\\\\\dfrac{30}{100} \times 140 = x\\\\x = 0.30 \times 140\\\\x=42[/tex]

Hence, the equation that shows the relationship 30% of 140 is x is x=0.30×140.

Learn more about Equation:

https://brainly.com/question/2263981

#SPJ2

Answer:

11/13

Step-by-step explanation:

3/13, 5/13, 7/13, 9/13, 11/13

3/13

3/13 + 2/13 = 5/13

5/13 + 2/13 = 7/13

7/13 + 2/13 = 9/13

9/13 + 2/13 = 11/13

Answer:

m+9

Step-by-step explanation:

Answer:

I] 135+45=180

therefore supplementary angles

ii] 55+35=90

complementary angles

iii]55+45=100

neither

iv] 77+13=90

complementary angles

Answer:

x = 4

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

4(x+2)=6x

distribute 4:

4x+8=6x

Subtract 4x from each side:

8=2x

Divide both sides by 2:

x=4