Please help will give brainiest!!! 4. The pathway of a quarter being thrown off a bridge can be modeled by the equation h = -16t2 + 72t + 120. At what time does the quarter reach a height of 50 feet?​

Answer:

3.14 is the brainliest answer of them all

Answer:

3.14 sq cm

Step-by-step explanation:

Diameter of the circle = 2 cm

-> radius of the circle (r) = 2/2 = 1 cm

Area of the circle

[tex] = \pi {r}^{2} \\ \\ = 3.14 {(1)}^{2} \\ \\ = 3.14 \times 1 \\ \\ = 3.14 \: {cm}^{2} [/tex]

5. r×2×pi

7km×2×pi=43.98km

6. d×pi

20cm×pi=62.83cm

7. d×pi

8.5m×pi=26.70m

8. r×2×pi

11yd×2×pi=69.12yd

9. d×pi

6(2/5)ft×pi=20.11ft

10. r×2×pi

25in×2×pi= 157.08in

Answer:

Step-by-step explanation:

Here is the equation for this problem:

2 1/2 + 1 3/4 + x = 12

To add 2 1/2 and 1 3/4, revert the fractions into mixed numbers, and then change the denominator to the LCM (Lowest Common Denominator)

3/2 + 7/4 + x = 12

The lowest common denominator, in this case, is 4. 7/4 stays the same because the denominator is already 4, but we need to multiply the numerator and denominator of 3/2 by two to get the denominator to 4. (Whatever you do to the numerator, you have to do to the denominator, and vice versa)

3 x 2 = 6

2 x 2 = 4

Now, the equation looks like this:

6/4 + 7/4 + x = 12

Now add the fractions. The denominator stays the same, but the numerators are added together.

6/4 + 7/4 = 13/4

Now, you can revert 13/4 back to a mixed number

13/4 = 3 1/4

The equation should look like this now:

3 1/4 + x = 12

Now subtract 3 1/4 from both sides (Meaning subtract 3 1/4 from 3 1/4 to cancel it out and also subtract 3 1/4 from 12 as well)

12 - 3 1/4 = 8 3/4

Now, it should look like this:

x = 8 3/4

You could change the 8 3/4 into a decimal as well, which would look like this:

x = 8.75

Here is a summary of the whole equation:

2 1/2 +  1 3/4 + x = 12

3/2 + 7/4 + x = 12

6/4 + 7/4 + x = 12

13/4 + x = 12

3 1/4 (-3 1/4) + x = 12 (-3 1/4)

x = 8 3/4 or 8.75 acres

Answer:

Lisa has 8 3/4 acres left for home sites

There will be 7.75 acres of land left for home sites.

Mixed fractions are type of fractions which includes both a whole part and a fractional part.

It is of the form a [tex]\frac{b}{c}[/tex], where a is the whole part and b/c is the fractional part. This actually implies that a +  [tex]\frac{b}{c}[/tex]. So we can do the cross multiplication to change the mixed fraction into improper fraction.

Total land for housing development = 12 acres

Land covered by park = 2 [tex]\frac{1}{2}[/tex]

                                     = (2 × 2 + 1) / 2

                                     = 5/2 acres

Land covered by paved areas = 1 [tex]\frac{3}{4}[/tex]

                                                  = (1 × 4 + 3) / 4

                                                  = 7/4 acres

Total land covered by park and paved areas = [tex]\frac{5}{2}[/tex] + [tex]\frac{7}{4}[/tex]

                                                                           = [tex]\frac{10}{4}[/tex] + [tex]\frac{7}{4}[/tex]

                                                                           = [tex]\frac{17}{4}[/tex]

                                                                           = 4.25 acres

So the remaining land = 12 - ([tex]\frac{5}{2}[/tex] + [tex]\frac{7}{4}[/tex])

                                     = 12 - 4.25

                                     = 7.75 acres

Hence Lisa can build the home sites in the remaining 7.75 acres of land.

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Answer:

A. [tex]m\angle a = 72\degree[/tex]

Step-by-step explanation:

[tex]m\angle a \: \angle c [/tex] are vertical angles.

Vertical angles are congruent.

[tex]\implies m\angle a = 72\degree[/tex]

Hope it helps you in your learning process.

Answer:

X<6

Step-by-step explanation:

the unfilled dot shows that there is no equal, and based on the direction, (left), it means less than. Since it starts at 6, less than 6

Answer:

x>6

Step-by-step explanation:

the unfilled dot shows that there is no equal, and based on the direction, (left), it means less than. Since it starts at 6, less than 6

Answer:

D

Step-by-step explanation:

To be completely honest, I don’t really remember 7th grade math, but from what I can recall, you are supposed to use rounding and counting up and down. You have to keep an eye out for the numbers already provided in the number line. It can really help you understand what you’re supposed to do.

Answer:

4 lines/sticks + 7 individual squares

Step-by-step explanation:

Decimal = 0.47

We can break 0.47 into 0.4 + 0.07. We can use 4 of the lines/sticks to represent 0.4 because the whole grid is equal to 1. We can use 7 individual squares to represent 0.07 because 1/100 is the same as one of the individual squares.

I hope this helps and please mark me as brainliest!

Answer:

4 sticks + 7 squares

Step-by-step explanation:

Hope I helped.

Answer:

180 would flip it on its side so -2,7

Step-by-step explanation:

Answer:

A. 35°

Step-by-step explanation:

Step 1: Derive an Equation

To answer this question, we will use what's called the Triangle Sum Theorem, which states that the sum of all of the interior angles of a triangle is 180°.

By this theorem, in ΔSRT (the triangle, not the angle), the sum of m∠TSR, m∠RTS, and m∠SRT is 180°. Putting this into a mathematical equation gives us the following:

m∠TSR + m∠RTS + m∠SRT = 180°

Now, from the picture, we can see that m∠TSR = 20° and m∠RTS = 125°. Substituting these values into our original equation gives us:

20° + 125° + m∠SRT = 180°

Step 2: Solve the Equation

Solving for m∠SRT, we get:

20° + 125° + m∠SRT = 180°

145° + m∠SRT = 180° (Simplify the LHS by combining like terms)

m∠SRT = 35° (Subtract 45° from both sides of the equation to isolate m∠SRT)

Answer:

105 square feet

Step-by-step explanation:

Area of wall: 14 x 9 = 126 ft^2

Area of door: 7 x 3 = 21 ft^2

126 - 21 = 105 ft^2

BRAINLIEST? TY!! :DD

Answer: [tex]2^{10}[/tex]

An exponent refers to the number of times a number is multiplied by itself. For example 2 to the 10th power means,  2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 =  [tex]2^{10}[/tex]. also as 1,024

Use rotation, and the angles and side lengths remain the same.

ACB=BED

BAC=BDE

ABC=EBD

AC=ED

AB=BD

BE=CB

Rotation rigid transformation can be used to map triangle ABC on to triangle DBE.

The angles ACB, BAC, ABC of given image are equals to the angles of preimage BED, BDE and EBD respectively. That is

ACB=BED

BAC=BDE, and

ABC=EBD

Also the sides AC, AB, and BE of the given image are equals to the sides of preimage ED, BD, and CB respectively. That is

AC=ED

AB=BD, and

BE=CB

The corresponding sides are

AC and DE

AB and BD

CB and EB

And the corresponding angles are

∠ACB and ∠BED

∠ABC and ∠EBD

∠CAB and ∠EDB

A rigid transformation or an isometry is a transformation that does not change the sides and angle of plane figures.

The three types of rigid transformation are:

1) Translation

2) Reflection

3) Rotation

According to the given question.

Triangle ABC is transformed to triangle DBE.

(a) Rotation rigid transformation can be used to map triangle ABC on to triangle DBE. If we rotate triangle ABC at 180 in clockwise direction the triangle ABC maps on to triangle DBE. ( A rotation is followed by another rotation).

(b) The angles ACB, BAC, ABC of given image are equals to the angles of preimage BED, BDE and EBD respectively. That is

ACB=BED

BAC=BDE, and

ABC=EBD

Also the sides AC, AB, and BE of the given image are equals to the sides of preimage ED, BD, and CB respectively. That is

AC=ED

AB=BD, and

BE=CB

(c) The corresponding sides are

AC and DE

AB and BD

CB and EB

And the corresponding angles are

∠ACB and ∠BED

∠ABC and ∠EBD

∠CAB and ∠EDB

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Answer: e=11.75h

Hope this helps :

Answer:

2

Step-by-step explanation:

Considering x the number of bags he can fill:

x[tex]\frac{3}{8} x = \frac{3}{4} \\x = \frac{3}{4} X \frac{8}{3}\\ x =\frac{24}{12}\\ x = 2[/tex]

I hope I made myself clear.

Answer:

total length: 2 1/6 ft   Leftover: 4 5/6 ft  How many: 2

Step-by-step explanation:

Total length: add 2/3ft and 1 1/2 ft together.

Leftover: Subtract 2 1/6ft from 6ft

How many: Multiply 2 1/6 by 2

Answer:

What is the total length of board that Hannah needs? 2 5/6 foot board

Step-by-step explanation:

Hannah needs 2 2/3 boards not 1

Angle v is smaller than 128 degrees. Angle r is larger than 52 degrees. Angle t is smaller than 128 degrees.
ANSWER: C. Angle s

Answer:

The zeros are 0,3,2

Step-by-step explanation:

Heres a graph

Answer:

27 feet.

Step-by-step explanation:

Graph the quadratic equation, then find the point on the graph which aligns with x=3. Y would equal 27.

Answer:

C no is correct which is (6,2)

Answer:

Tbh I am not sure but it's a semi-circle prism or like semi cylinder (I think) but usually semi-circles themselves will not tessellate bc circles have no angles and when u line them up next to each other there will be gaps between them and one of the tessellation rules is that no overlapping or gaps so yeah

I am sorry lol if that's all wrong but my answer is no, I don't think that this figure is a tessellate plane

The equation for each translation of the graph of y=| 1/2x-2|+3 is

g(x)=| 1/2x-3/2|+3.

Given that,

[tex]y=| 1/2x-2|+3[/tex]

Translate the above one unit to the left

Replace y with f(x)

[tex]f(x)=| 1/2x-2|+3[/tex]

A translation is a movement of the graph either horizontally parallel to the -axis or vertically parallel to the -axis.

When an absolute function is translated to the left, the resulting function is,

[tex]g(x)=f(x-h)[/tex]

Because it is been translated 1 unit to the left, h = -1

[tex]g(x)=f(x-(-1))[/tex]

[tex]g(x)=f(x+1)[/tex]

Now we calculate f(x+1)

[tex]f(x+1)=| 1/2(x+1)-2|+3[/tex]

[tex]f(x+1)=| 1/2x+1/2-2|+3\\f(x+1)=| 1/2x+1-4/2|+3\\[/tex]

[tex]f(x+1)=| 1/2x+(-3)/2|+3\\\\f(x+1)=| 1/2x-3/2|+3[/tex]

We have,g(x)=f(x+1)

[tex]g(x)=| 1/2x-3/2|+3[/tex]

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Answer:

angle 2=62°

angle 3=66°

angle 1=147°

Step-by-step explanation:

ang 2=62° (vertically opposite angle )

62+90+142+angle 3=360° (sum of angle of quadrilateral is 360°)

294+ang 3=360°

angle 3= 360-294

angle 3=66

60+71+62+angle 1=360°

213+angle 1= 360°

angle 1= 147°

Answer:

A=64π

Step-by-step explanation:

Area of a circle=πr²

π·10²-π·6²

=100π-36π

=64π

If you need to round it

64π≈201.062

Hope this helps :D

9 * 25 = 225

225 - 6 = 219

There are 219 chairs left.

Answer:

219 Chairs are left.

Step-by-step explanation:

[tex]\rightarrow[/tex] Each row has 25 chairs. And there are total 9 rows.

So, total number of chairs = 25×9

= 225

➾ Workers removed 6 chairs, so left number of chairs = 225-6

= 219 chairs.

____________________________________

Hope it helps you:)

Answer:

x = 12

Step-by-step explanation:

Answer:

C (Third option)

Step-by-step explanation:

Rotation of 90 degrees clockwise is (y,-x)

D(0,3)-> D'(3,0)

E(4,3)-> E'(3,-4)

F(0,7)-> F'(7,0)