a) 7x + 2y + x + 3y

b) x + 7y + 10x - 15y

HELP

**a) 8x + 5y**

**b) 11x - 8y**

**Combine like terms in each expression and you'll get the answer! You can't simplify any further from here, so there's your answer.**

A) 7x = 3y+2y. So 7x=5y.

A tunnel is in the shape of a parabola.if the tunnel is 40 feet wide and has a maximum height of 12 feet. write the equation of the quadratic function that represents the tunnel(let the axis of symmetry be the y-axis)

9514 1404 393

**Answer:**

y = -0.03x² +12

**Step-by-step explanation:**

For "tunnel" or "arch" or "bridge" problems, I like to start with the expression ...

y = 1 - x²

It has a height of 1 and intersects the x-axis at ±1. This can be scaled to give the appropriate height and x-intercepts.

We want the x-intercepts to be ±20, so we can scale this horizontally by a factor of 20:

y = 1 -(x/20)²

We want the height to be 12, so we can scale it vertically by a factor of 12:

y = 12(1 -(x/20)²

y = 12 -12(x²/400)

** y = -0.03x² +12**

Find the value of x. (Round to the nearest tenth as needed.)

**Answer:**

Hope that answers your question

In ΔUVW, the measure of ∠W=90°, the measure of ∠U=19°, and WU = 85 feet. Find the length of VW to the nearest tenth of a foot.

**Answer:**

**29.3feet**

**Step-by-step explanation:**

From the triangle given

<W = 90 degrees

<U = 19 degrees

<V = 180 - (90+19)

<V = 180 - 109

<V = 71 degrees

Using SOH CAH TOA

tan theta = opp/adj

tan <V = WU/VW

tan 71 = 85/VW

VW = 85/tan 71

VW = 85/2.9042

VW = 29.27

**Hence the length of VW to the tenth of a foot is 29.3feet**

**29.3 is in fact the correct answer**

so ive been ground for 3 months for a low grade in math what should I do to get un grounded

**Answer:**

score a high grade in another subject

**Step-by-step explanation:**

**Answer:**

AAA

**Step-by-step explanation:**

start filling out math and putting unnecary notes

Which graph represents the solution set of this inequality? 11q +5 ≤ 49

**Answer:**

We need to isolate q on one side. 11q+5 <_ 49 Start subtracting 5 from both sides. 11q+5-5 <_ 49 -5 11q < 44 The answer will be B. q < 4.

**Step-by-step explanation:**

**Answer:**

the answer is B

**Step-by-step explanation:**

khan

Which equation can be used to solve for b?

**Answer:**

tan(30)=5/b

**Step-by-step explanation:**

**Answer:**

a^2 + b^2 = c^2

**Step-by-step explanation:**

Find a polynomial f(x) of degree 4 that has the following zeros. 0, -4, 6, -8

**Answer: -10 I think**

**Step-by-step explanation:**

David weeds lawns in his neighborhood to earn money to buy video games. For each lawn, he charges $5.50. If he weeds 4 lawns on Saturday, how much money will he earn?

**Answer:**

$51.75

**Step-by-step explanation:**

**Answer:**

$22

**Step-by-step explanation:**

4 * 5.50 = 22

please view math question and help!!

The second one Exponential

A lacrosse player throws a ball into the air from a height of 8 feet with an initial vertical

velocity of 32 feet per second. What is the maximum height of the ball? When will the ball hit the ground?

**Answer:**

**Step-by-step explanation:**

Read the answer carefully and then you'll know hey i need to multiply 8 times 32.

And what do you get......Modeling the situation with a **quadratic equation**, it is found that:

Considering the gravity, the **height **of the ball, after **t seconds**, is given by the following quadratic equation.

[tex]h(t) = -4.9t^2 + v_0t + h_0[/tex]

In which:

[tex]v_0[/tex] is theIn this problem:

Height ofThe **equation **is:

[tex]h(t) = -4.9t^2 + 32t + 8[/tex]

Which is a **quadratic equation** with [tex]a = -4.9, b = 32, c = 8[/tex].

The **maximum height** is the **output **of the **vertex**, which is:

[tex]h_{MAX} = -\frac{\Delta}{4a} = -\frac{b^2 - 4ac}{4a}[/tex]

Then, with the coefficients of this question:

[tex]h_{MAX} = -\frac{32^2 - 4(-4.9)(8)}{4(-4.9)} = 60.2[/tex]

The **maximum height** of the ball is of **60.2 feet.**

It **hits the ground** at t for which [tex]h(t) = 0[/tex], thus:

[tex]\Delta = b^2 - 4ac = 32^2 - 4(-4.9)(8) = 1180.8[/tex]

[tex]t_{1} = \frac{-32 + \sqrt{1180.8}}{2(-4.9)} = -0.12[/tex]

[tex]t_{2} = \frac{-32 - \sqrt{1180.8}}{2(-4.9)} = 3.39[/tex]

We want the positive value, so:

The ball **hits the ground** after **3.39 seconds.**

A similar problem is given at https://brainly.com/question/24626341

mhanifa or someone else can you PLZ answer this

**Answer:**

[tex] \frac{7 {n}^{2} - 41n + 8 }{ {n}^{2} - 1 } [/tex]

**Step-by-step explanation:**

[tex] \frac{7n}{n + 1} + \frac{8}{n - 7} \\ \\ = \frac{7n(n - 7) + 8(n + 1)}{(n + 1)(n - 1)} \\ \\ = \frac{7 {n}^{2} - 49n + 8n + 8 }{ {n}^{2} - 1 } \\ \\ = \frac{7 {n}^{2} - 41n + 8 }{ {n}^{2} - 1 } [/tex]

**Answer:**

Simplified:

[tex]\frac{7n}{n + 1} + \frac{8}{n - 7}[/tex] =[tex]\frac{7n(n - 7) + 8(n + 1)}{(n + 1)(n - 7)}[/tex] =[tex]\frac{7n^2 - 49n + 8n + 8}{n^2 + n - 7n - 7}[/tex] =[tex]\frac{7n^2 - 41n + 8}{n^2 - 6n - 7}[/tex]This can be further simplified if required

[tex]\frac{7n^2 - 42n -49 + n + 57}{n^2 - 6n - 7}[/tex] =[tex]7 + \frac{n + 57}{n^2 - 6n - 7}[/tex]one hundred and sixty-two thousandths as a decimal

**Answer:**

0.0162

**Step-by-step explanation:**

Cause it is

**Answer:**

0.162

**Step-by-step explanation:**

one hundred and sixty-two thousandths

162/1000 = 0.162

Please help! I don't understand. view photo.

**Answer:**

**Step-by-step explanation:**

they are asking about the exponential

b/c it has a 3 in the exponent, it's a cubic and because it has two terms you can call it a binomial

What is the area of this parallelogram?

4.9 cm²

12.25 cm²

17.15 cm²

24.01 cm²

PLS HELP!! I WILL GIVE BRAINLYIST

**Answer:**

The answer is 17.15! Brainliest pls :D

**Answer:**

C, 17.15

**Step-by-step explanation:**

4.9*3.5 = 17.15

Which expression below is equivalent to 9 - 3(2 - 5x)?

A 3-15x

B 12-30x

C 3+ 15x

D 3+5x

Answer:

Step-by-step explanation:

9-3(2-5x)

9-6+15x

3+15x

**Answer:**

C

**Step-by-step explanation:**

9-3(2-5x)

9-6+15x=

3+15x

A student runs 7 km in 2 hours to train for sports. What is the student’s average speed?

**Answer:**

**Step-by-step explanation:**

For every hour said student would've ran 3.5 km/hr

7/2=3.5 kilometers per hour or 3 1/2 kilometers per hourchords with inscribed angles

**Answer:**

A:

i) ∠ABC is an inscribed angle

ii) ∠ATC is a central angle

B: ∠ABC = 150/2 = 75°

C: ∠ATC = 150°

help please and thank you

!!

**Answer:**

f(x) = 2ˣ + 1

**Step-by-step explanation:**

Based on the exponential increase, you know that it will be an exponential equation, meaning that you can cancel out the first two options.

The easiest way to do pick the between the two remaining equations is by plugging in an x-value and seeing if the y-value for that equation matches the y-value from the equation.

For (3, 9):

f(x) = 3ˣ = 3³ = 27

f(x) = 2ˣ + 1 = 2³ + 1 = 8 + 1 = 9

The last equation is the equation that is represented by the table.

What is the reflected across y-axis and reflected across x-axis for (-2, 6)

across the y axis it will be (2, 6)

if reflected across x axis it will be (-2, -6)

if reflected across x axis it will be (-2, -6)

Find X. This is a 40°, 40°, 90° triangle.

**Answer:**

In a 45°−45°−90° triangle, the length of the hypotenuse is √2 times the length of a leg. To see why this is so, note that by the Converse of the Pythagorean Theorem , these values make the triangle a right triangle. Note that an isosceles right triangle must be a 45°−45°−90° triangle.

**Step-by-step explanation:**

GEOMETRY. Need help i will give brainliest

**Answer:**

x = 10

**Step-by-step explanation:**

If two tangent segments are drawn to a circle from an external point, then those segments are congruent.

x+11 = 2x+ 1

x = 10

**Answer:**

x=10

**Step-by-step explanation:**

x+11=2x+1

x+10=2x

10=2x-x

x=10

Brillianst!!!!!

Determine the measure of angle A

**Step-by-step explanation:**

**3****x****+****1****8****=****4****x****+****2**

**x=**** ****1****6**

**measure**** ****of ****<****A ****=**** ****6****6****°**

What is the vertex of the parabola y=(x+3)+9?

(3,9)

O (-3,-9)

O (3,9)

The answer is C. (-3,9)

HELP THIS BS IS DUE IN 20 MINS!!!!!!!

**Answer: 5.5**

**Step-by-step explanation:**

If each sandwich is $5.5 then the slope must be y=5.5x

A repairman leans the top of an 26 foot ladder against the

top of a stone wall. The base of the ladder is 4.7 feet from

the wall. How tall is the wall? (Use Pythagorean Theorem:

a² + b2= c2)

**Answer:**

653.91 squared or 326.955 not squared

**Step-by-step explanation:**

We have a hyponuse of 26 and one leg of 4.7 and we are trying to figure out the missing leg!

The first step is

A^2 + B^2 = C^2

2 step

4.7^2 + B^2 = 26^2

3 step

4.7 x 4.7 = 22.09 and 26 x 26 = 676

4 step

22.09 + B^2 = 676

5 step

676 - 22.09 = 653.91

6 step

Answer

653.91 squared or 326.955 not squared!

hope this helps

[tex]21\geq 12+x[/tex]

Answer : Inequality form : x <_ 9

Interval Notation: ( - ∞, 9)

Interval Notation: ( - ∞, 9)

-2/7 ÷ (-8/21) step by step answer

please this homework is due today its benchmark practice and i have to sleep like in 10 or 7 min like no joke

**Answer:**

1.3

**Step-by-step explanation:**

first, divide the parentheses:-8/21= **-0.380952**

second, dived -2/7= -0.285714

now divide both of them **-0.380952 ÷ **-0.285714 = 1.3

How much did movies A and D combined make that week?

5 combined that week

5 compounded that week

Solve for x. 2x−5=−x+7

**Answer:**

x = 4

**Step-by-step explanation**

2x−5+x=−x+7+x

3x−5=7

3x−5+5=7+5

3x=12

x=4

**Answer:**

x = 4

**Step-by-step explanation:**

You need to isolate the variable on one side first so that the equation is easier to solve. To do that, add x to both sides to get 2x + x, which is 3x. This gets rid of the -x on the other side and results with the new equation

3x - 5 = 7. Add 5 to both sides to get 3x = 12, then divide both sides by 3 to get x = 4.

You can check your work by plugging in 4 for x.

2(4) - 5 = -(4) + 7

8 - 5 = 3

3 = 3

Therefore, x is equal to 4.

Hope this helped! Have a good day!

If l m, identify the angle pair as congruent or supplementary. Justify your reasoning by classifying the angle pair

**Answer:**

Not them Still deleting answers

**Step-by-step explanation:**

HHEEEEEEELPPPPP, I'LL MARK THE BRAINLIEST
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