Evaluate the expression: (–2)2 + (–42) + (18 – 23).



A. –19
B. 19
C. –17
D. 3

Answer:

y = 0.5

Step-by-step explanation:

plug in x = 4 into the second equation

4 - 4y = 2

Simplify

-4y = -2

y = 0.5

Answer:

8.

Step-by-step explanation:

As seen in the pattern y seems to be two times x so 4 x 2 = 8.

Hope that helps

Answer:

see attached diagram

Step-by-step explanation:

A dilation with a scale factor of -2 centered at the origin has a rule:

[tex](x,y)\mapsto\left(-2x,-2y\right).[/tex]

Then the image of the triangle ABC is triangle DEF(see attached diagram) with coordinates

Answer:

the other answer is correct

Step-by-step explanation:

took test on k12 and that was right

Answer:

56/79=.7088

The answer is 70.9%

Answer:

70.9%

Step-by-step explanation:

Hope this helps

Answer:

1) 2/25 = 0.08

2) 23/50 = 0.46 = 46%

3) 14/20 = 0.7 = 70%

4) 90% = 0.9

Answer:

1) 2/25 = 0.08%

2) 23/50 = 46%

3) 14/20 = 70%

4) 90% = 0.9

Answer:

A

Step-by-step explanation:

using the sine ratio in the right triangle, then

sin 45° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{5}[/tex]

multiply both sides by 5

note the exact value of sin 45° = [tex]\frac{\sqrt{2} }{2}[/tex]

x = 5 × sin 45° = 5 × [tex]\frac{\sqrt{2} }{2}[/tex] = [tex]\frac{5\sqrt{2} }{2}[/tex]

A basketball priced at $35.00 with a 40% discount would cost $21.00 after the discount.

The final price of the basketball can be calculated by first identifying the amount being discounted from the original price. A 40% discount of a $35.00 basketball means you take 40% of 35. Here's how:

0.40 (40% converted to decimal) times $35.00 equals $14.00.

This $14.00 is the discount from the original price. Now, subtract this discount from the original price of the basketball to get the final price: $35.00 - $14.00 equals $21.00.

So, the final cost of the basketball after a 40% discount is $21.00.

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Answer:

A= Angle 1 congruent to angle 2

B= Transitive Property

C= Converse Corresponding angles theorem

Step-by-step explanation:

If PQ is the tangent, then m∠P = 90°.

Therefore we can use the Pythagorean theorem:

[tex]x^2=5^2+12^2\\\\x^2=25+144\\\\x^2=169\to x=\sqrt{169}\\\\\boxed{x=13}[/tex]

Answer:

the blue and the pink

Step-by-step explanation:

Step-by-step explanation:

Percentage by which the gas tank of the car is full = 40%

Amount of gas in the gas tank = 8 gallons

capacity of the gas tank = x gallons

40% * x = 8

(40/100) * x = 8

4x/10 = 8

4x = 8 * 10

4x = 80

x = 80/4

Answer   = 20 gallons

Answer: After 2:29 hours both Aldrin and Jan will be 13 km apart from each other.

Time at that instant will be : 4:00 pm + 2.29 hours= 6:29 pm

Step-by-step explanation:

According to the figure:

Ab= c = 13 Km

AC = b = [tex]distance= speed\times time =5\times t[/tex]=5t Km

After two hours the distance covered by the Aldrin say till point D :

[tex]distance=speed\times time=3km/hr\times 2 hrs=6 Km[/tex]

Since, we are interested in determining the time at which Aldrin and Jan both 13 Km apart. For that Aldrin Additional distance covered by the Aldrin from point D to B is :

[tex]distance=speed\times time= 3km/hr\times t=3t Km [/tex]

CB= a = CD+DB= 6+3t

We will apply Laws of cosines:

[tex]C^2=A^2+B^2-2AB\times Cos\theta[/tex]

[tex](13)^2=(6+3t)^2+(5t)^2-2(5t)(6+3t)Cos 60^o[/tex]

[tex]19t^2+6t-133=0[/tex]

On solving the the above equation by quadratic formula we get two values of 't'

1) t = 2.49 hours , 2) t = -2.80 hours

Since,time cannot be in negative so we will ignore the negative value of t

t = 2.49 = 2:29 hours ,(0.49 hour=0.49 × 60 min=29.4 min)

After 2.49 hours after the walking of Jan. Both Aldrin and Jan will be 13 km apart from each other.

Time at that instant will be : 4:00 pm + 2:29 hours= 6:29 hour

Answer:

Grams.

Step-by-step explanation:

Answer:

THE GRAM

Step-by-step explanation:

Probably the third answer is right. If you divide the 9x-6y=12 by 3, it gives you the exact same equation as the 3x-2y=4. They're the same, so they'd overlap.

Answer:

the company's payment was $1720

Step-by-step explanation:

Mary's total cost (without the monthly premium) is $630

Answer:

C. y = ½x

Step-by-step explanation:

Step 1. Find the slope of the line

The general equation for a straight line is

y = mx + b

The slope m is

m =(y₂ -y₁)/(x₂/x₁)

Your points are (-10, -5) and (20, 10).

m = [10 – (-5)]/[20 – (-10)]     Remove inner parentheses

m  = (10+5)/(20 + 10)

m = 15/30

m = ½

===============

Step 2. Find the equation of the line

Substitute the point (20, 10) into the general equation.

10 = ½×20 + b

10 = 10 + b

b = 0

The equation of the line is y = ½x.

The graph shows your line passing through your two points with a slope

m = ½ and a y-intercept at (0, 0).

Answer:

c<4+10

c<14

Step-by-step explanation:

can I get brainliest?

Answer:

6<c<14

Step-by-step explanation:

Answer:

X           Y

0          $500

1           $465

2          $430

3           $395

4          $360

5          $325

6          $290

Step-by-step explanation:

You subtract 35 from the first Y.

Answer:

the answer is D 51 because if you do 29.58 divided by 58 you get .51 which is 51% decreased.

Step-by-step explanation:

Answer:4% raise

Step-by-step explanation:

Answer:

Step-by-step explanation:

Omar bought 15 pizzas in May.

In May, he bought 3 more than twice the number that he bought in April.

Since we don't know how many he bought in April, let X = the number of April pizzas.

Then, 15 = 2X + 3

Now you can subtract 3 from both sides, then divide both sides by 2 to leave X by itself and discover what it equals.

Final answer:

Omar bought 24 pizzas in April, calculated by setting up an equation based on the information that in May he bought three more than twice the pizzas he got in April.

Explanation:

The question is asking to find the number of pizzas Omar bought in April given that he bought three more than twice the number in May, and he bought 15 pizzas in May. To solve this, we can set up an equation: April Pizzas + 3 = 2 × (April Pizzas) + 2 × 3. Since we know that Omar bought 15 pizzas in May, we substitute 15 for the total number of Pizzas in May, which gives us: April Pizzas + 3 = 30. Subtracting 3 from both sides gives us April Pizzas = 27 - 3, so April Pizzas = 24. Therefore, Omar bought 24 pizzas in April.

The distance between -57 and 13 on a number line is 70 units.

The distance between -57 and 13 on a number line is 70 units.

To find this distance, we subtract -57 from 13:

13 - (-57) = 13 + 57 = 70.

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The distance between -57 and 13 on a number line is 70 units.

A number line is a visual representation of real numbers arranged in order along a straight line. It extends infinitely in both directions, with zero at the center. Positive numbers are to the right, and negative numbers are to the left. Integers, fractions, and decimals are located at corresponding points.

The number line aids in understanding numerical relationships, performing arithmetic operations, and visualizing the concept of magnitude and direction in mathematics. It's a fundamental tool for teaching and learning mathematical concepts. The distance between -57 and 13 on a number line is 70 units.

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Answer:

v = 4/5 or 0.8

Step-by-step explanation:

Givens

These two corresponding parts are equal

Equation

Answer

v = 4/5 or v = 0.8

Answer: There are 20 white lights.

Step-by-step explanation:

Given : There is a string of green and white lights strung around a mirror for every 6 green lights there are 4 white lights.

i.e. Ratio of green lights to white lights = 6:4

i.e.

[tex]\dfrac{\text{Number of green lights}}{\text{Number of white lights}}=\dfrac{6}{4}\\\\\Rightarrow\ \dfrac{30}{\text{Number of white lights}}=\dfrac{6}{4}\\\\\Rightarrow\ \text{Number of white lights}=\dfrac{4\times30}{6}=20[/tex]

Hence, there are 20 white lights.

Answer:

8x¹²y³

Step-by-step explanation:

 (2x⁴y)³             Cube everything inside parentheses.

= 2² × (x⁴)³ × y³

= 8x¹²y³

Answer:

Yes

Step-by-step explanation:

Because it passes vertical line test.

Yes, because y = x + 3 is a first degree function which is a linear function. Just ignore the absolute value.

Answer:

7.25

Step-by-step explanation:

We know that 7 equals to 7.0. We also know that 1/4=0.25. So we can add the two together and we get 7.25

So since 1 multiplied by a number or variable, the number always stays the same we can say that 1(x-5)=x-5. We then, can open the parenthesis for 13*-3x+13*12. The answer for that would be -39x+156. So we then know that x-5-39x+156. We can simplify this until -38x+151.

Hope this helps. <3

Answer:

<A = 30

<B = 150

Step-by-step explanation: