Four times Audry’s age plus 7 is Perry’s age. Perry is 51. What is Audrey’s age

Answer:

5400

Step-by-step explanation:

Let x represent the cost of a chair and y represent the cost of a table. We can use this to set up a system of equations:

7x=2y

6x+5y=10575

We can solve this system using substitution.

Start by rewriting the first equation in terms of x.

[tex]7x=2y\\\text{Divide both sides by 7}\\x=\frac{2}{7}y[/tex]

Substitute this into the second equation:

[tex]6(\frac{2}{7}y)+5y=10575\\\frac{12}{7}y+5y+10575\\\frac{12}{7}y+\frac{35}{7}y=10575\\\frac{47}{7}y=10575[/tex]

Multiply both sides by 7

[tex]47y=74025[/tex]

Divide both sides by 47

[tex]y=1575[/tex]

This means...

[tex]7x=2(1575)\\7x=3150[/tex]

Divide both sides by 7

[tex]x=450[/tex]

One chair costs 450. Now, multiply this number by 12 to find the cost of 12 chairs.

[tex]450*12=5400[/tex]

12 chairs cost 5400.

Add the exponents and keep the same base. Then reciprocal it and change the sign of the exponent. Then the value of the exponent expression is 0.5.

Exponential notation is the form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponent is a number or letter is called the base. It indicates that the base is to raise to a certain power. X is the base and n is the power.

The exponent expression is 2³ × 2⁻⁴ can be simplified.

Add the exponents and keep the same base. Then we have

2³ × 2⁻⁴  = 2⁽³⁻⁴⁾

2³ × 2⁻⁴  = 2⁻¹

Then find the reciprocal and change the sign of the exponent.

[tex]2^3* 2^{-4} = 2^{-1}\\\\2^3* 2^{-4} = \dfrac{1}{2}\\\\2^3* 2^{-4} = 0.5[/tex]

The value is 0.5.

More about the exponent link is given below.

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Answer:

The answer is D.

Step-by-step explanation:

Hope this helps. Pls give brainliest!

The prοbability οf getting 4 green οutcοmes and 1 οrange οutcοme in 5 rοlls οf the number cube is 803/1000 οr 0.803 as a decimal.

Prοbability can be defined as ratiο οf number οf favοurable οutcοmes and tοtal number οutcοmes.

The prοbability οf rοlling a green side is 5/6, and the prοbability οf rοlling an οrange side is 1/6.

Tο find the prοbability οf getting 4 green οutcοmes and 1 οrange οutcοme in 5 rοlls, we can use the binοmial prοbability fοrmula:

P(4 green, 1 οrange) = (5 chοοse 4) * [tex](1/6)^1 * (5/6)^4[/tex]

where (5 chοοse 4) represents the number οf ways tο chοοse 4 rοlls οut οf 5 tο be green.

(5 chοοse 4) = 5! / (4! * 1!) = 5

Substituting this value intο the fοrmula:

P(4 green, 1 οrange) [tex]= 5 * (1/6)^1 * (5/6)^4[/tex]

= 5 * (1/6) * (625/1296)

= 3125/3888

= 0.803

Therefοre, the prοbability οf getting 4 green οutcοmes and 1 οrange οutcοme in 5 rοlls οf the number cube is 803/1000 οr 0.803 as a decimal.

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Answer:

(10 hours 45 minutes) + (50 minutes) + (30 minutes) =

12 hours 5 minutes

Step-by-step explanation:

Answer:

[tex]3\sqrt{6}[/tex]

Step-by-step explanation:

[tex]\sqrt{54}=\sqrt{9 \times 6} =\sqrt{9}\sqrt{6} =3\sqrt{6}[/tex]

Answer:

finite - it is equal to 15.625

HOPE THIS HELPS!!!

Answer:

Finite.

Step-by-step explanation:

125/8=15.625

Answer: 6

Step-by-step explanation:

Answer: B: 19.5

Step-by-step explanation:

This data set is an even data set meaning that you're going to have to add and divide, so you put your data set in ascending order (highest # to lowest #) so 12,12,15,24,31,38 its an even data set so you're going to put them in groups (remember your finding the median, the middle numbers) so you have 12,12 (one group) and 31,38 (another group) (basically make it even!!) so now you're left with the middle numbers, you have to add them and then divide them by 2 so (15+24) ÷2 and you get your answer !!

Answer:

x = 1

Step-by-step explanation:

Axis of symmetry is a line which divides an object into two equal halves giving it exactly like a mirror shape.

Here a line of x = 1 can be drawn to separate the figure into equal halves.

Answer:

x = 1

Step-by-step explanation:

I think that it is 1.

Answer:

I'd say A. Because it's literally going the same way as the arrows shown below.

Answer: 2n-7

Step-by-step explanation:

Volume of cylinder = Base Area x Height

V=πr2h

Rearrange for h

Height = Volume/Base Area

h = V/πr2

h = (6n² -13n -28)/(3n+4)

See the long division of the polynomials below, the quotient is 2n-7 which represents the height of the cylinder

Answer:

total marbles in the box is 600

Step-by-step explanation:

We're going to be factoring:

[tex]12 {x}^{4} + 27 {x}^{3} + 6 {x}^{2} [/tex]

We know that the GCF between 12, 27, and 6 is 3.

We also know that the GCF of x^4, x^3, and x^2 is x^2.

When factoring:

[tex]3{x}^{2} (4 {x}^{2} + 9x + 2)[/tex]

We know 3x^2 is the correct option since the polynomial is factored completely.

Answer:

[tex]3x^2[/tex]

Step-by-step explanation:

[tex]12x^4 + 27x^3 + 6x^2[/tex]

The coefficients of the variables are 12, 27 and 6.  The greatest common factor (GCF) of these numbers is 3.

[tex]\implies 3(4x^4 +9x^3 + 2x^2)[/tex]

From inspection, the GCF of the variables is [tex]x^2[/tex]

[tex]\implies 3x^2(4x^2+9x + 2)[/tex]

Therefore, the GCF of the terms in the polynomial is [tex]3x^2[/tex]

Answer:

Rectangle: 112m

Trapezoid: 28m

Step-by-step explanation:

The area of the rectangle is 8*14, which is 112. The area of the trapezoid is ((base1 + base2)* height)/2. That is ((4+10)*4)/2, which is 28.

Answer:

Step-by-step explanation:

you ask for the two separate areas

The area of a trapezoid is found using the formula, A = ½ (a + b) h, where 'a' and 'b' are the bases (parallel sides) and 'h' is the height

[(14 - 2 - 2 + 4) * (12 - 8)] : 2 =

(14 * 4) : 2 = 28m² (trapezoid)

The area of a rectangle is found by multiplying the length by the width

14 * 8 =

112m² (rectangle)

Answer:

It's been a hot minute since I have done these, but if I'm correct the answer is 13%

Step-by-step explanation:

6/7 is .86 or an 86% chance. Followed by 1/6 which is .16 or a 16% chance. .86 multiplied by .16 is .13 giving the sequence a 13% chance.

Answer:

the volume of said cube would be 1 unit ³

Step-by-step explanation:

1x1x1=1

Answer:

d

Step-by-step explanation:

g(x) is equal to 3x-1

therefore

(3x-1) + (3x-1)

3x= 6

6x - 2

Answer:

DE=BA

EF=BC

FD=CA

Step-by-step explanation:

brainliest appreciated

hope this helps

let's start with the triangle, since that seems very obvious per se, the triangle has a base of 20 and a height of 14.

[tex]\textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b= base\\ h= height\\[-0.5em] \hrulefill\\ b=20\\ h=14 \end{cases}\implies A=\cfrac{1}{2}(20)(14)\implies A=140[/tex]

now let's do the sector.

[tex]\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta \pi r^2}{360}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=20\\ \theta =45 \end{cases}\implies \begin{array}{llll} A=\cfrac{(45)\pi (20)^2}{360} \\\\\\ A=50\pi \implies A\approx 157.08 \end{array}[/tex]

now let's do the segment.

[tex]\textit{area of a segment of a circle}\\\\ A=\cfrac{r^2}{2}\left( \cfrac{\pi \theta }{180}~~ - ~~sin(\theta ) \right)~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=20\\ \theta =45 \end{cases} \\\\\\ A=\cfrac{20^2}{2}\left( \cfrac{\pi (45)}{180}~~ - ~~sin(45^o) \right)\implies A=200\left(\cfrac{\pi }{4}~~ - ~~\cfrac{1}{\sqrt{2}} \right) \\\\\\ A=50\pi - 100\sqrt{2}\implies A\approx 15.66[/tex]

Answer:

45 degrees

Step-by-step explanation:

all angles of a square add up to 360
360 divided by 4 is 90
the diagonal bisects the angle in half so 90 divided by 2 is 45

Answer:

45°

Step-by-step explanation:

Each interior angles of a square is 90° since each side is perpendicular to its adjacent side.

Therefore, as the diagonal bisects the angle(s), this means it divides each 90° angle into 2 equal parts.

So 90 ÷ 2 = 45

Answer:

74

Step-by-step explanation:

Answer: You can't answer this without the graph

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

7+8=15

15 x 3 = 45

45/9=5

Answer:

No, because if x=? then itś, not a true equation, a true equation is when you have infinite solutions, in this case, if the problem is asking for 1 solution then yes, if it's asking for a true statement no.

Answer:

Yes, Brianna is correct because when you solve for x you get 5 and when you substitute you get 20.

Step-by-step explanation:

combine like terms 4x-3x=x

5=x

substitute x with 5

3(5)+5=4(5)

distribute

15+5=20

Answer:

110.0m^2

Step-by-step explanation:

Area = a x b x π

a = 5m, b = 7m so

Area = 35pi which is 110.0m squared to one decimal place

Answer:

m = -5 / 10 = -1 / 2 = -0.5

Step-by-step explanation:

Answer:

△stu could be similar to △pqr IF They have 2 angles that are the same (congruent) also known as the AA theorem. Another way would be if the triangle have a 2 side that are congruent and an angle that is congruent that is between both sides (the rule is known as the SAS theorem)! The last rule would be if all the side are congruent OR if they equal the same thing. For example if you got a triangle with 3,4,5 as sides and another one that has 6,8,10 as sides. 3/6 = 4/8 = 5/10 so that would be the SSS rule

Hope you found that helpful!!!

Step-by-step explanation:

ΔSTU ~ ΔPQR if and only if [tex]\frac{ST}{PQ} = \frac{TU}{QR} = \frac{SU}{PR}[/tex] and ∠S ≅∠P , ∠T≅∠Q and ∠U≅∠R.

" Two triangles are said to be similar if the ratio of the corresponding sides of one triangle to the other triangle are in proportion and corresponding angles are congruent."

According to the question,

ΔSTU is similar to  ΔPQR,

As per the definition of similar triangles we have,

Corresponding sides are in proportion.

ST ↔PQ

TU↔QR

SU↔PR

Therefore,

[tex]\frac{ST}{PQ} = \frac{TU}{QR} = \frac{SU}{PR}[/tex]  are in proportion.

∠S↔∠P

∠T↔∠Q

∠U↔∠R

∠S ≅∠P ,

∠T≅∠Q

∠U≅∠R.

Hence, ΔSTU ~ ΔPQR if and only if [tex]\frac{ST}{PQ} = \frac{TU}{QR} = \frac{SU}{PR}[/tex] and ∠S ≅∠P , ∠T≅∠Q and ∠U≅∠R.

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