b) Evaluate the algebraic expression 2x2 + 5x +6 if x is equal to (-1).​

Answers

Answer 1

Step-by-step explanation:

if x is equal to - 1

Then

2x² + 5x + 6

= 2* ( -1)² + 5 * (- 1) + 6

= 2 - 5 + 6

= 8 - 5

= 3

Hope it will help :)❤

Answer 2

Answer:

if x=-1

then

2(-1)2+5(-1)+6

2(1)+5(-1)+6

2-5+6

X=+3


Related Questions

what is 323 dived by 48?

Answers

323/48=6.73

Hope this helps!!

The Parent-Teacher Association (PTA) wants to find out
how much students pay for school supplies at the
beginning of the school year, so it conducts a survey at
certain local stores. PTA members visit these stores to
find the prices of the items on the students' supply lists.
What is the sample in this study?
A. The prices of listed items at the selected stores
B. The prices of pencils at the selected stores
C. The prices of listed items at all local stores
D. The prices of listed items at one store

Answers

The sample is A because the stores conduct prices not students.

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Two numbers have a sum of 76 and a difference of 8. What is the larger number?

A. 34
B. 46
C. 68
D. 42

Answers

Answer:

46,42

( I hope this was helpful) >;D

Identify the slope and explain

Answers

it looks to be about y=1.5/6x+6
Y=1.5/6x +6 is the correct answer

Steve connected a wire extension that is ⅜ foot long to another wire that is ½ foot long. How long is the wire with the extension?

Answers

3/8+1/2 = 3/8+4/8 = 7/8 ft

What does slope represent

Answers

Step-by-step explanation:

The slope and y-intercept values indicate characteristics of the relationship between the two variables x and y. The slope indicates the rate of change in y per unit change in x.

which one should I pick

Answers

the answer is 9.2. It’s an isosceles triangle

0.96 x 4.5 = 4.32 show the formula in doing it​

Answers

0.96•4.5 = 4.32
X=1
0.96x•4.5• 100= 4.32• 100
^ multiply both sides by 100
Refine, 432x = 432
Then divide both by 432
X=1

Decide whether each equation is true for all, one, or no values of x.

Answers

Solution:

1) 6x - 4 = -4 + 6x

6x -6x = -4+4

0 = 0

ans - true

2) 4x -6 = 4x + 3

4x-4x = 3+6

0 = 9

Ans - false

3) -2x+4=-3x+4

-2x + 3x = 4 - 4

x = 0

ans - false

158.297 rounded each number to the nearest while number

Answers

Answer: 158

Step-by-step explanation:

158.297

It rounds to 158

since 0.297 < 0.5

Ron earned $ 840 in a week . How much will he earn in 36 days

Answers

Answer:

about 4200

Step-by-step explanation:

in order to solve this, you have to understand that there are 4 weeks within a month, which would give you the answer of 3360 and 36 days is approximately 5 weeks, therefore just add one more week to the total of 3360+ 840 = 4200

help me please!
i don’t understand!

Answers

Answer:

Harry is paid £64

Step-by-step explanation:

To work this out you have to divide 48 ÷ 6 to get 8.

8 hours x £8 = £64

Answer:

64

you have to find the LCM of 48 including 6 and use the other number which is 8 and multiply it by how long Harry worked 8 hours which gives you £64

I need help on this and the first person who answer correctly gets a BRANLIST​

Answers

Answer:

Inequality Form:

w  ≤  6

Interval Notation:

( − ∞ ,6)  

Find the area of a circle with a circumference of 12.56 units​

Answers

Answer: The area is 12.55


Will give brandy list

Answers

the Answer is A.20 because 90+70 is 160 and you need 20 more to make it 180

pls help ill give brainliest to the person WHO GETS IT RIGHT

Answers

Answer:

The answer is D

Step-by-step explanation:

Answer:

the answer is the last option. p <_ 48

please help me it's urgent

If

p  10

, find the value of

2

p p   2 100.​

Answers

Step-by-step explanation:

p

2

−2p−100=(−10)

2

−2(−10)−100 [Putting p=−10]

=100+20−100=20.

ᴍᴀʀᴋ ᴀꜱ ʙʀᴀɪɴʟɪᴇᴀꜱᴛ

Erin completes 11 transactions in his bank account. In 6 transactions, he withdraws $10 each time. in 5 transactions, he deposits $20 each time. Find the total net change in dollars. ​

Answers

Answer:

The answer is 30

Please give me Brainliest it would mean a lot

Help hurry !!!!!!! I need help

Answers

Answer:

it's is the last one 1 out of 6

10
After a power failure, the temperature of a freezer rises 7 degrees to -31 degrees. What was the
original temperature of the freezer?
-38 degrees
-24 degrees
38 degrees
I don't know

Answers

38 degrees

because i’m apart like that

HELPPPPPPPPPP I WILL GIVE BRAIN THING

Answers

Answer:

1, 8 and -3

Explanation:

x is bigger than or equal to -3. Any positive number is bigger than a negative number.

Hope that helps!!

Answer:

1, 8, -3

or

A, B, D

Step-by-step explanation:

We need to figure out which numbers are greater than or equal to -3

1 is greater than -3

8 is greater than -3

-4 is smaller than -3

-3 is equal to -3

Therefore, the applicable answers in this equation are 1, 8, -3

Can anyone help me choose the correct answer?!

Answers

Answer:

f(x)=2x is your answer

when x=-9

f(-9)=-9×2=-18

other similar to this.

Tell whether the ordered pair is a solution.
y=4x
(1,4)

Answers

Answer:

It’s a solution

Step-by-step explanation:

what is 12.5% of 40?​

Answers

Answer:

5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Solution for What is 12.5 percent of 40:

12.5 percent *40 =

(12.5:100)*40 =

(12.5*40):100 =

500:100 = 5

Now we have: 12.5 percent of 40 = 5

Question: What is 12.5 percent of 40?

Percentage solution with steps:

Step 1: Our output value is 40.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$40=100\%$.

Step 4: Similarly, $x=12.5\%$.

Step 5: This results in a pair of simple equations:

$40=100\%(1)$.

$x=12.5\%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

$\frac{40}{x}=\frac{100\%}{12.5\%}$

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{40}=\frac{12.5}{100}$

$\Rightarrow x=5$

Therefore, $12.5\%$ of $40$ is $5$

What is an equation of the line that passes through the point (7,-7) and is perpendicular to the line x-2y=2x−2y=2?

Answers

Answer:

y=−2x+7

Step-by-step explanation:

The other moron doesn't understand simple math.

An equation of the line that passes through the point (7,-7) and is perpendicular to the line x - 2y = 2 will be  2x + y = 0.

What is Slope of Line ?

We have the given line x - 2y = 2 which is in form ax + by = c As we know that slope of line ax + by = c will be -(a/b).

Therefore For given line x -2y = 2 value of a will be 1 and value of b will be -2. Therefor Slope of given line will be -(a/b) = -(1/-2) = 1/2.

Now As we know that slope of two lines which are perpendicular to each other has product of there slopes as negative of unity that is -1.

Let the slope of line which we have to find be m also we have slope of given line as 1/2.

∴ m(1/2) = -1

∴ (m/2) = -1

∴ m = -1(2)

∴ m = -2.

Now as we know that line passes through the point given as (7,-7) and has slope m = -2.

Therefore equation of a line passing through a point (x₁, y₁) and have slope m will be given as

  y - y₁ = m(x - x₁)

∴ y - (-7) = -2(x - 7)

∴ y + 7 = -2x -(-7)

∴ 2x + y = 7 - 7

∴ 2x + y = 0

For more details about slope of line visit the link below

https://brainly.com/question/16949303

#SPJ2

A triangular pane of glass has a height of 42 inches and an area of 546 square inches. What is the length of the base of the pane?

Answers

Answer:

Base = 26 in

Step-by-step explanation:

Recall the formula for the area of a triangle as:

Area = (Base x Height) / 2

In our case, this formula converts into:

546 in^2 = Base x 42 in /2

multiply both sides by 2 to get rid of fractions:

1092 in^2 = Base x 42 in

divide both sides by "42 in" to isolate the Base completely

1092 in^2 / 42 in = Base

Therefore Base = 26 in

Mike spent $80.50 on 5 videos. If each video cost the same amount, how much did one video
cost?

Answers

Answer:

$16.10

Step-by-step explanation:

All you have to do is do 80.50/5 since if they all cost the same amount, and since there are 5. Anyway 80.50/5 is 16.1, or $16.10.

4. Write the equation in point-slope form. (-6, -2) and m = 3

Answers

y+2=3(x+6) is your answer.

-5•4+ (2-(-3)²)^2

Uhhhhhhh help

Answers

Answer:

29

Step-by-step explanation:

:)

y'all i NEED help!! 30 points!! brainliest if correct!! look at the image...thanks!

Answers

Answer:

A

Step-by-step explanation:

I did 20 times 5 times 5 for bottom = 500, top is 5 times 5 times 5= 125, 500+125=625

Answer:

A.) [tex]625\\[/tex] [tex]in^{3}[/tex]

Step-by-step explanation:

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