If f(x) = 2x2 – 1, then f(-3) =​

Answers

Answer 1

Answer:

-4 cot (-45)

Step-by-step explanation:

cos (390)

sin (330)


Related Questions

which of the following are a solution to be inequality?
select all that apply

v is less then or equal to 7

v=7
v=5
v=9
v=12

Answers

V=7 and v=5 because since it says less than or equal to it has to be a number less than 7 or a number equal to 7

Please help me I need it soon

Answers

Ok so first you need to just ask ya teacher for help
bottom right = 20 degrees
left side of 104 = 76 degrees
right side of 104 = 76 degrees
bottom of 104 = 104 degrees

3. A pitcher of water contains 1/4 liter of water. The water is poured equally into 5 glasses.
a. how many liters of water are in each glass? (EXPLAIN)
b. Write the amount of water in each glass in MILLILITERS.

Answers

Answer: 1/20

Step-by-step explanation:

1/20 liters because 5 times 4/1 (5 divided by 1/4) equals 1/20

can someone answer these question

Answers

Answer:

y=5

Step-by-step explanation:

Given x=1, the equation would come to be y = 5^1, or y equals 5 to the first power. You'll need to focus on the 5^1, 5 to the first power is 5, that's your answer.

A coat bought for £48 in a sale
had been reduced by 20%. What
was the price of the coat before
the sale?

Answers

Answer:

£57.6

Step-by-step explanation:

a person ate 2000 calories in a day of those calories 35% were from fat how many calories are from fat​

Answers

Answer:

700

Step-by-step explanation:

In AEFG, the measure of ZG=90', the measure of ZE=51°, and FG = 5.2 feet. Find
the length of EF to the nearest tenth of a foot.

Answers

Answer: 6.7 feet

Step-by-step explanation: sin 51= 5.2/x

xsin51= 5.2

xsin 51/sin 51 = 5.2/sin 51

​x= 5.2/sin 51 =6.6911≈ 6.7 feet

On March 8, 2017, one Chinese yuan was worth 0.14 U.S. dollars.
On that date, how many dollars was 170.22 yuan worth?
Round your answer to the nearest hundredth of a dollar.

Answers

pues las etapas de ahí son textos el inicio nos interesa pero luego se tornan muy interesantes

what is the sum of the measures of the interior angles of a hexagon ​

Answers

Answer:

Hexagon has 6, so we take 540+180=720. A heptagon has 7 sides, so we take the hexagon's sum of interior angles and add 180 to it getting us, 720+180=900 degrees.

Hexagon has 6, so we take 540+180=720

Can someone please help

Answers

You just plug in the -2 for x to get the equation -2^2–3•-2+4= 6
f(x)= x^2-3x+4
f(-2)= (-2)^2 - 3(-2) + 4
= 4+6+4
=14

Phil made a number line showing the multiples of 3/6...

What is the product 2 x 3/6?

Answers

the answer would be 6/6 because they want you to multiply 2 x 3/6

Please help! due soon!!!!!

Answers

Answer:

D

Step-by-step explanation:

First, we isolate the -4y and make the equation "4y=3x-16." Now we divide the equation by 4 to get "y=3/4(x)-4". The y-intercept in this case is -4. The only equation given that has a y-intercept of -4 is answer D.

D is the answer I believe

Find the area of triangle STU

Help me

Answers

Answer:

12cm cubed

Step-by-step explanation:

A= base*height/2 so base is 6 just count the squares and height is 4 at the highest point  so just plug those in the formula hopefully its correct

Answer: 35 cm2

Step-by-step explanation:

The height is 5

and the base is 7

area of triangle = bxh    

                          = 7 x 5

                           = 35 cm2

A bag contains 324 sweets Amelia takes 1/9 of the sweet from the bag the remaining sweets are divided between Isabella and Olivia in the ration 1:5 how many sweet dose Olivia have ?

Answers

Answer:

Olivia has 240.

Step-by-step explanation:

Amelia took 36 and there were 288 left over. A ratio of 1:5 with 288 would be 48 and 240 so therefore, Olivia has 240.

consider the equation -2x+3y=6 write an equation in slope-intercept form

Answers

Answer:

6=-2x+3

Step-by-step explanation: I don't know if this is what you mean

please helpp will make right answer brianlyist

Answers

Answer:

y=3/2x+12

Step-by-step explanation:

use desmos graphing calculator

If 24 houses can be built by 3 builders in a fixed period of time, how many houses can be built by 7 builders

Answers

Answer:

Possibly 56

Step-by-step explanation:

24 divided by 3 is 8.  8 x 7 is 56.

A kennel has 90 dogs in total, some are puppies and some are adult dogs. The ratio
of puppies to adult dogs in a kennel is 3:2. How many adult dogs are there?

Answers

Answer:

36

Step-by-step explanation:

90÷5=18

18×2=36

We multiply two because the ration for adults is 2

Algebra 2!!

The equation of the piecewise function f(x) is below. What is the value of f(3)?

Answers

Answer:

5

Step-by-step explanation:

Ask your self which equation you should use. Since it says F(3) then we have to find an equation that would fit this correctly. For example if we look at -X^2, X<-2 we could see that 3 is clearly not less than -2, leading to the conclusion that this is not the right equation.. If you look at the last equation it says that x has to be greater/equal to 0 which is true. So then we are left with the equation...

F(3)=x+2

F(3)=3+2

F(3)=5

FIRST CORRECT ANSWER GETS BRAINLIEST - 100 POINTS

Answers

Answer:

110cm

Step-by-step explanation:

With the slice, we know that we need to find the area of a triangle with a base of 10cm and a height of 22cm.

Let 10 be x and 22 be y.

Substitute this into the equation for finding the area of a triangle.

[tex]\frac{x*y}{2}[/tex]

Which now becomes

[tex]\frac{11*20}{2}[/tex]

Which now becomes

[tex]\frac{220}{2}[/tex]

Now solve.

[tex]\frac{220}{2} = 110[/tex]

Your answer is 110cm.

Hope this helps. Have a nice day. Oh, and one more thing. Surprised that I'm not stealing points?

I need help ASAP!!! If someone could explain anyone of these I would be so grateful!

Answers

Answer:

7. x = 23

Step-by-step explanation:

They are angles on transversals intersecting parallel lines. Also vertical angels are equal to each other.

So for example question 7 you need to use these two things to realize that 4x is the same angle as (3x + 23) so you have to put them in an equation like this

4x = 3x + 23 and then solve it algebraically

A circle has a diameter of 4 inches. Which statement about the area and circumference of the circle is true?​

Answers

The numerical values of the circumference and area are equal.

Answer:

To simplify it a

Step-by-step explanation:

Solve this to get 25 points. Correct answer gets brainliest!

Answers

Answer:

T = 59

U = 27

V = 94

Step-by-step explanation:

(5x +4) + (8x + 6) + (2x+5) = 180

15x + 15 = 180

15x = 165

x = 11










Solve the inequality.
−9<−1/5x









Solve the inequality.

−9<−1/5x

Answers

Multiplying a negative and a positive equals a negative: (-) × (+) = (-)

[tex] - 9 < - \frac{ 1}{5} x[/tex]

Multiplying both side of the inequality by -5 and flip the inequality sign:

[tex]( - 5) \times ( - 9) = 45[/tex]

[tex]45 > x[/tex]

Now, swap the sides of the inequality and flip the inequality sign:

[tex]x < 45[/tex]

Name BOTH pairs of alternate interior angles. HELPPPPP PLEASE!!!!!!

Answers

Answer:

Angles 6 and 2

Step-by-step explanation:

They are in the "interior" of the figure, plus, ik how to do this

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

3 + 7 and 2 + 6

Hope this helps!! :)

What value of m makes the triangles similar? A)6 B)9 C)1.5 D)5

Answers

Answer:

6

Step-by-step explanation:

2x2=4

3x2=6

:D

Answer:

6

Step-by-step explanation:

small triangle is 2 and 3

big triangle is 4 and m

2 times 2 is 4

3 times 2 is 6

Sorry if this is wrong...

Please please please help me!!! I need this really fast and quick. Will give brainliest to whoever can answer quickly please

Answers

No, she is wrong. A rotation in 180 would result in A(-4,1) to be A’(4,-1) but instead A’ in the graph is (1,4) meaning they did a rotation 270 degrees.

Classify the following triangle. Check all that apply.
70
15.8
8
80"
30
15
A. Obtuse
B. Isosceles
C. Scalene
D. Equilateral
E. Right
F. Acute

Answers

We are to check the options and choose which applies to the triangle

The options which applies is option C, Scalene and option For, Acute

Obtuse: It is not an obtuse angle because none of the angles are greater than 90°

Isosceles: It is not an isosceles triangle because it has no two equal sides

Scalene: It is a scalene triangle because all the sides are not equal sides

Equilateral: It is not an equilateral triangle because all the sides are not equal

Right: It is not a right angle because none of the angles form a straight line equivalent to 90°

Acute: It is an acute angle because the angles measures less than 90°

The correct answer is Scalene and acute

Read more:

https://brainly.in/question/6701976

5. Sarah has 5 less dollars than Jessica. Sarah has 17 dollars.
A: Write an equation that describes this solution.
B. What is the solution to the equation?

Answers

Answer:

A. J = 17 + 5

B. J = 22

Jessica has $22.

Answer:

22

Step-by-step explanation:

17+5 because the 5 represents how many more do jessica got and 17 means how much sarah got it total

......................

Answers

Answer:

<d=90 and <f and <e are both 45?

Step-by-step explanation:

Answer:

90-38 = 52

D = 90

E = 38

F = 52

Step-by-step explanation:

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