Which step could you use to start solving the system of equations below?*
x + y = 3
-3x – 2y = -7

Answer:

-5/4

Step-by-step explanation:

because 1/4 would be .25 so .25 x 5 = 1.25

and then just make it negitive

Answer:

Step-by-step explanation:

There are an infinite number of fractions which equal -1.25.

But for simplicity realize that this is equal to -1.25/1. Multiply the numerator and denominator by 4 to get

-5/4

Answer:

i think it is 212.8

Step-by-step explanation:

Answer: it’s 212.8

Step-by-step explanation:

Answer:

87.92cm

Step-by-step explanation:

C=2pir

= 2×3.14×14

=87.92cm

Answer:

87.96

Step-by-step explanation:

C = 2πr

C = 2(3.14)14

C = 6.28(14)

C = 87.96

I graphed this line below.

Start with an open dot on 7.

The reason we use an open dot is because x

does not equal 7, it is only greater than 7.

So from your open dot, draw an arrow to the right

to represent all numbers greater than 7.

Finally, state your answer in set notation if possible.

It is read as {x: x > 7}.

Answer:

C) 4x^2 + 13x - 35

Step-by-step explanation:

(4x-7)(x+5)

4x × x + 4x × 5 - 7x - 7 × 5

4x^2 + 20x - 7x - 35

4x^2 + 13x - 35

Answer: 8.3

Step-by-step explanation:

Answer:

w=-8

Step-by-step explanation:

take both sides and divide by 7

(w+13)=5

subtract both sides by 13

w=-8

Answer:

15 liters

Step-by-step explanation:

Answer:

107

Step-by-step explanation:

24/9=2.66666-Its a repeating decimal

2.666666...(40)=106.66666......

That is about 107 liters

<3 Good Luck

Answer:

hope it helps it is donr by using pythogorous theorem

The third side of the right triangle is 10.72 unit.

Pythagoras' Theorem states that the square of the hypotenuse side in a right-angled triangle is equal to the sum of the squares of the other two sides.

Given, the side of right triangle is;

Let H be hypotenuse = 14

And P be perpendicular = 9

Then to find third side base be B,

we use the Pythagoras theorem;

(H)² = (P)²+(B)²

Rearranging,

(B)² = (H)² - (P)²

(B)² = (14)² - (9)²

(B)² = 196 - 81

(B)² = 115

B = 10.72 unit.

Therefore, the third side is 10.72 unit.

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Answer:

x < 3

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

Gang ima just take them points tbh

Step-by-step explanation:

Answer:

[tex]A). \: \$31,411.80[/tex]

Step-by-step explanation:

[tex]s.i = \frac{p \times r \times t }{100} \\ \\ s.i = \frac{87255 \times 9 \times 4}{100} = 31,411.8[/tex]

Answer:A

Step-by-step explanation:

Answer:

angle A =90- angle B

angle A=(2x+5)

angle B =2x(let the angle A be x)

(2x+5)=90-2x

2x+5=90-2x

4x+5=90

4x=90-5

4x=85

x=85/4=21.25

angle A=2(21.25)+5=42.5+5=47.5

angle B =2(21.25)=42.5

Answer:

Step-by-step explanation:

y = (x² - 8x) + 10

Complete the square

 coefficient of the x term: -8

 divide it in half: -4

 square it: (-4)² = 4²

 use 4² to complete the square and keep the equation balanced:

y = (x²-8x + 4²) - 4² + 10

y = (x-4)² - 6

Answer:

y = (x - 4)² - 6

Step-by-step explanation:

use the 'completing the square' method:

x² - 8x + 10 = 0

x² - 8x + 16 = -10 + 16

(x - 4)² = 6

y = (x - 4)² - 6

Answer:

A: His raise was $23.8

B: He is making $1213.8

Step-by-step explanation:

Do 1190 divided by 100 and your answer will be

11.9 which is 1%, then do (11.9 + 11.9) + 1190 which will equal 1213.8

a. Will's raise was the amount of $23.80. b. Will is now making $1,213.80 biweekly.

The percentage is defined as a ratio expressed as a fraction of 100.

For example, If Misha obtained a score of 67% on her exam, that corresponds to 67 out of 100. It is expressed as 67/100 in fractional form and as 67:100 in ratio form.

Will receive a 2% increase in pay, He was making $1,190/biweekly.

a. Will's raise was $23.80. This can be calculated by multiplying his original biweekly payments of $1,190 by 2% (0.02).

b. Will is now making $1,213.80 biweekly. This can be calculated by adding his raise of $23.80 to his original biweekly payments of $1,190.

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Answer:

The answer is pretty simple it's 12+10

Step-by-step explanation:

Answer:

Step-by-step explanation:

8 4 16 ? ?

32 16 64 ? ?

i dont know the last two but here

Answer:

[tex]\theta = 4.8^\circ[/tex]

It is possible

Step-by-step explanation:

Given

See attachment for the construction

Solving (a): The minimum angle

This is calculated as thus:

[tex]tan(\theta) = \frac{Opposite}{Adjacent}[/tex]

[tex]tan(\theta) = \frac{15}{180}[/tex]

[tex]tan(\theta) = 0.0833[/tex]

Calculate [tex]\theta[/tex]

[tex]\theta = tan^{-1}(0.0833)[/tex]

[tex]\theta = 4.761[/tex]

[tex]\theta = 4.8^\circ[/tex] --- approximated

Solving (b):

First; calculate the height of the building using the following equivalent ratio.

[tex]h : 420 = 15 : 180[/tex]

Where h is the height of the building

[tex]\frac{h }{ 420 }= \frac{15 }{ 180}[/tex]

[tex]h= \frac{15 }{ 180}*420[/tex]

[tex]h= \frac{15*420 }{ 180}[/tex]

[tex]h= \frac{6300}{ 180}[/tex]

[tex]h= 35[/tex]

This means that it is possible that the builder builds a 32 feet high building

From the picture attached,

Angle of depression = Angle of elevation (θ)    [Alternate angles]

Apply tangent rule in ΔCDP,

[tex]\text{tan}\theta=\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]

[tex]\text{tan}\theta=\frac{CD}{DP}[/tex]

       [tex]=\frac{15}{180}[/tex]

       [tex]=\frac{1}{12}[/tex]

[tex]\theta=\text{tan}^{-1}(0.08333)[/tex]

[tex]\theta=4.76^\circ[/tex]

Use this property to get the height of the new building.

Since, ΔABP and ΔCDP are the similar triangles, their corresponding sides will be proportional.

[tex]\frac{AB}{BP}=\frac{CD}{DP}[/tex]

[tex]\frac{AB}{420}=\frac{15}{180}[/tex]

AB = [tex]\frac{420\times 15}{180}[/tex]

     = 35 feet

But the construction for a new building has a maximum height restriction of 32 feet.

And the height of the building is more than the restricted height.

    Therefore, it is not possible for the builder to have a rooftop patio with a view of the ocean.

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Answer:

c im pretty sure because im good at this

Answer:Melissa's  mom, dad, and brother  each drove 312miles, 168miles and 0 miles respectively

Step-by-step explanation:

If Mellisa's dad drove 35% of the way

and Melissa's mum drove 65% of the way,

Then

Melissa's brother did not drive at all because

Miles covered by her dad = 35% x 480 = 0.35 x480= 168 miles

Miles covered by her mum= 65% x 480 = 0.65 x 480=312miles

her mom, dad, and brother  each drove 312miles, 168miles and 0 miles respe ctively

Answer:

A2 + B2 = C2, so 4 squared + 19 squared = C2, 16 + 361 = 377. 377's square root is 19.4.

Step-by-step explanation:

The measure of the hypotenuse is 19.4 cm.

Given that, one of the legs of a right triangle measures 4 cm and the other leg measures 19 cm.

The Pythagoras theorem which is also referred to as the Pythagorean theorem explains the relationship between the three sides of a right-angled triangle. According to the Pythagoras theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides of a triangle.

Let the measure of the hypotenuse be x.

Using Pythagoras theorem,

x² = 4² + 19²

⇒ x² = 16 + 361

⇒ x² = 377

⇒ x = √377

⇒ x = 19.4 cm

Therefore, the measure of the hypotenuse is 19.4 cm.

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Answer:

So -1-9= -10

And if x =4 then 2(4)-4y=20

Y= -3

Step-by-step explanation:

2(4)-4y=20

8-4y=20

-4y=12

y=-3

Answer:

-1 - 9 = -10 &

y = -3

Step-by-step explanation:

2x - 4y = 20

2(4) - 4y = 20

8 - 4y = 20

-4y = 12

y = -3

good luck, i hope this helps :)

Answer:

-3(-5+2x)+x

Step-by-step explanation:

First you have to use Distributive Property and multiply -5 and 2x by -3. you should have -6x+15+x. then you have to combine like terms but subtract -6x and x which gives us 5. your answer should be -5x+15.  You can rearrange the answer to be 15 - 5x.

57/24 = 19/8 (divide numerator and denominator by 3)

Hope this helps.

Q) 57/4 × 1/6 = 57/24 = ?

→ 57/4 × 1/6

→ 57/24 = 19/8

Therefore the final answer is,

→ 57/4 × 1/6 = 57/24 = 19/8

Step-by-step explanation:

22

A thermally insulated vessel contains

150 g of water at 0°C. Then the air from the

vessel is pumped out adiabatically. A

fraction of water turns into ice and the rest

evaporates at 0°C itself. The mass of

evaporated water will be closest to:

(Latent heat of vaporization of

water = 2.10 x 106 Jkg - and Latent heat of

Fusion of water = 3.36 x 105J kg-1)

Answer:

socratic

Step-by-step explanation:

just use the app

Answer:

$3

Step-by-step explanation:

4 x 1.75 = $7

$10 - $7 =

$3

Hope that helps!

The amount of change you will receive after buying the cloth is N3.00.

Given is that you bought 4m of cloth at N1.75 per meter.

The amount of change you will receive after buying the cloth is -

N10 - N(1.75 x 4)

N{10 - 1.75 x 4}

N{10 - 7}

N3.00

Therefore, the amount of change you will receive after buying the cloth is N3.00.

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Answer:

it should be did the math 1/5