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3 years ago

F(x) = -x² + x + 13 Find f(9)

Mathematics

2 answers:

RSB [31]3 years ago

8 0

Answer:

103.

Step-by-step explanation:

If you plug in 9 for the value of x in the equation, 103 is your answer.

krek1111 [17]3 years ago

6 0

Answer:

f(9) = -59

Step-by-step explanation:

to find f(9), just substitue 9 for every x value in the equation

for example:

f(x) = -x² + x + 13

substitute in 9 for the x values

f(9) = -9² + 9 + 13

solve and add like terms

f(9) = -59

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Complete the equation. explain how you got your answer 4/5 X 3/7 =?

Verizon [17]

Answer:

Cross canclening

Step-by-step explanation:

15/35 = is 4/5 x 3/7 you just mutliply on top and bottom

then you simplfy it which makes it 3/7 in totall

8 0

2 years ago

Need help plsss compare decimals help pls !! Will make brainless

vitfil [10]

Answer:

See below

Step-by-step explanation:

.3 and .30 are the same number they are =

0.3 = 0.30

6 0

2 years ago

Read 2 more answers

PLEASE HELP ASAP!!! WILL GIVE MORE POINTS IF ANSWERED QUICKLY!!!

tresset_1 [31]

From 8:25 to 30 seconds past 8:29 is 4.5 minutes.

This means she rode her bike 3/4 mile in 4.5 minutes.

Calculate her speed per mile:

1 mile / 0.75 = 1.333

4.5 minutes * 1.333 = 6 minutes per mile.

She needs to ride 3.42 miles, so multiply distance by speed:

3.42 miles x 6 minutes per mile = 20.52 minutes.

0.52 * 60 = 31.2 seconds.

This means it will take a total of 20 minutes and 31 seconds to get from her house to school.

She left at 8:25, add her travel time:

8:25 + 20 minutes and 31 seconds = 8:45 and 31 seconds.

This is sooner than the time school starts so she makes it on time.

5 0

3 years ago

Sam's Steakhouse has a waiter to cook ratio of 5 to 2. The total number of waiters and cooks is 42. How many waiters does Sam's

alisha [4.7K]

Answer:

30 waiters

Step-by-step explanation:

the ratio of 5 waiters to 2 cooks

you are given the total number of waiters and cooks = 42

write equation

x (5 + 2) = 42

7x = 42

x = 6

now distribute the x into waiters which is 5x or 5(6) = 30 waiters

additionally 2x is for cooks or 2(6) = 12 cooks; which adds up to 42

3 0

2 years ago

Is there enough information to prove that the triangles are congruent?

artcher [175]

<h3>Answer:</h3>

$\boxed{\boxed{\pink{\bf\leadsto No }}}$

<h3>Step-by-step explanation:</h3>

No , theres not enough information provided to Prove that both the triangles are congruent. Here in the figure we can see that there are two triangles ∆ BDA and ∆ BDC. And its given that

AB = BC
BD = BD ( common side )

The congruence conditions for two ∆s are :-

1) SAS ( Side Angle Side )

→ Two triangles are said to be congruent by SAS if two respective sides of the two triangles and the included angle between two sides are equal.

2) AAS ( Angle Angle Side )

→ Two triangles are said to be congruent by AAS if two angles and one side of triangle is congruent to other two angles and one side of the triangle .

3) SSS ( Side Side Side )

→ Two triangles are said to be congruent by SAS if all the three sides of one triangle is equal to three sides of the other triangle.

4) RHS ( Right Hypotenuse Side )

→ In two right-angled triangles, if the length of the hypotenuse and one side of one triangle, is equal to the length of the hypotenuse and corresponding side of the other triangle, then the two triangles are congruent.

And the given data doesn't satisfies any of the conditions.

<h3>Hence there is not enough information provided to Prove that two triangles are congruent .</h3>

8 0

3 years ago