The histogram shows the scores of students on their most recent history test. How many students scored 80% or better on the test?

Answer:

20 degrees

Step-by-step explanation:

90 degrees minus 70 degrees, because it is a 90 degree angle.

Answer:

  450

Step-by-step explanation:

There are 900 3-digit numbers in the range 100–999. Of those, exactly half are even numbers.

There are 450 even three-digit numbers.

• State whether the figure appears to have line symmetry. Write yes or no. If so, draw all lines of symmetry and state their number.

•State whether the figure has rotational symmetry. Write yes or no. If so, locate the center of symmetry, and state the order and magnitude of symmetry.

Answer:

yˆ=2.608x2−115.265x+1568.065

Step-by-step explanation:

I took the test.

The quadratic regression equation best fits the data set is 2.608x²  -155.264x + 1568.064 option second is correct.

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

Let's suppose the quadratic regression equation best fits the data set:

y = Ax² + Bx + C

From the data set, we can calculate the value of the A, B and C:

A = 2.608

B = -155.264

C = 1568.064

y = 2.608x²  -155.264x + 1568.064

Thus, the quadratic regression equation best fits the data set is 2.608x²  -155.264x + 1568.064 option second is correct.

Learn more about the line of best fit here:

brainly.com/question/14279419

#SPJ2

Answer: 2

Step-by-step explanation:

8 - 4 = 4

5 - 3 = 2

4/2 = 2

Answer:

Step-by-step explanation:

the rate of change or slope from the given two points is rise over run.

(3, 4) (5, 8)

slope = (y2 - y1) / (x2 - x1)

         = (8 - 4) / (5 - 3)

         = 4 / 2

         = 2

Answer:

Step-by-step explanation: 37/56

Answer:

a x a x a x a x a x a x a

Step-by-step explanation:

a^3 is three a's being multiplied by each other. a^4 is four a's being multiplied by each other

Answer:

The area of a rectangle is the product of its dimensions. Your park has an area of

 (5/8 mi)×(2/3 mi) = 10/24 mi² = 5/12 mi²

Step-by-step explanation:

Answer:

2 km 691 m

Step-by-step explanation:

5 km - 2 km 309 m

= 5000 m - 2309 m

= 2691 m

= 2 km 691 m

Step-by-step explanation:

[tex]v = ypu \\ v = y \times p \times u \\ dividing \: both \: sides \: by \: p \times u \\ we \: get \\ \frac{v}{p \times u} = \frac{y \times p \times u}{p \times u} \\ by \: simpliphying \\ \frac{v}{pu} = y \\ hence \\ y = \frac{v}{pu} [/tex]

Hey there!

The degree is the exponent.

Let me explain with examples.

Suppose we have a polynomial 4d.

Its degree is 1 (it's a first degree polynomial)

What is the degree of the polynomial 4d²?

That's right, this is a second-degree polynomial.

And so on...

Let's look at our polynomial.

We have

-7d.

What is the degree of the polynomial?

That's right, 1.

Hence, -7d is a

[tex]\boxed{\boxed{\bold{first-degree~polynomial}}}[/tex]

Hope everything is clear.

Let me know if you have any questions!

#KeepLearning

[tex]\bold{Don't~give~up...}[/tex]

Answer:

2 km 7 m=2000m+7m=2007m=

1000

2007

km=1.007 km

Step-by-step explanation:

please mark me as brainlist

Answer:

His change would be $1.27 because he paid $3.73 for the pen and marker.

Step-by-step explanation:

Answer:

2x+3y=11. x=4 and y=1.

10x+5y=20. x=1 and y=2.

Answer:

C. 30°

Step-by-step explanation:

thank you for the points make me brainliest please.

Answer:

translation of 8 units to the left

Step-by-step explanation:

the x coordinate change by -8 so that is 8 units to the left

Answer: i think that jacks volume would be 24 i think jills is 882 i believe but i may be wrong

Step-by-step explanation:

Answer:

[tex]\sf{ (z-7)(z-2)}[/tex]

explanation:

[tex]\sf z^2 - 9z + 14[/tex]

break down, (7 * 2) = 14

[tex]\sf z^2 - 7z - 2z + 14[/tex]

collect in parenthesis

[tex]\sf z ( z - 7 ) -2(z - 7)[/tex]

collect in groups

[tex]\sf{ (z-7)(z-2)}[/tex]

Answer and Step-by-step explanation:

Solution:

Develop hypothesis:

H₀ : µ ≥ 1056

H₁ < 1056

Given:

n = 400

ẋ = 910

∂ = 1600

a = 0.05

The sampling distribution of sample means µ and standard deviation ∂ / √n.

Z = ẋ-µ /∂ / √n.

  = 910 – 1056 / 1600 /√400.

 = - 1.83

Probability: p = p(z< -1.83) = 0.033

At a = 0.05

If p value is smaller than significance level a, then hypothesis is rejected.

P < 0.05 its means H0 rejected.

Hypothesis test using critical value:

The critical value corresponding to probability of 0.05:

Z = -1.645

The rejection region, then contains all values smaller than -1.645.

If value of test statistics is within the rejection region, then null hypothesis rejected.

-1.83 < -1.645

Rejected H

Answer:

Step-by-step explanation:

For the first one here is the answer:

Given.

Transitive property of equality- this is becasue the rule is if A=b and B=c then A=c. IN this situation its saying that a is parrelel to b and b is parralel to c therfore a is parrelel to c.

line A and d cross over at 90 degree angles making them perpendicular. -There should be a rule for this and if there is then write that rule down

Second answer:

Given.

Definition of a  supplementary angle.

Definition of a supplementary angle

Definition of supplementary angles.

Alternate Exterior Angles Theorem

C=D

-Srry for the definiton of supplementary angles thing but thats the best answer for those.

Hope i helped

Answer:

The lines represented by the equations y = -X – 3 and

5y + 5x = -15

Step-by-step explanation:

neither are parallel nor perpendicular

Submit Answer

the same line

parallel

perpendicular

What is the answer?

Answer:

No

Step-by-step explanation:

No because if you have 38 on the bottom, 20 and 16 do not add up to 39 or more.

Answer:

C)  1340 days

Step-by-step explanation:

The composite function you have given is incorrect.

The composite function for this question is:

t(d) = 60d + 20

(as I have proven in a previous question)

Substitute d = 22 into the function:

t(22) = 60(22) + 20

        = 1320 + 20

        = 1340 days

Answer:

need more detail

Step-by-step explanation:

Answer:

Step-by-step explanation:

Cos(90-2x) . tan(180+x) + sin^2(360-x)​

= sin(2x) * tan(x) + sin²(x)

= 2sin(x) cos(x) sin(x)/cos(x) + sin²(x)

= 2sin²(x) + sin²(x)

= 3sin²(x)