Given that a = -2 and b = 7 ,evaluate the following algebraic expression

(1) a(b2 -a)

Answers

Answer 1

Answer:

-2(14--2)

-2*19

38.

I think this is the correct answer. Thanks

Answer 2

Answer:

Answer is -32.

Step-by-step explanation:

a= -2

b=7

Expression: a(b2-a)

 -2(7*2--2) (Place 'a' and 'b' values)

= -2(14+2) (Solve inside the bracket)

= -28-4 (Multiply -2 with the values inside the bracket)

= -32 (ans)

Thank you!!

Hope it helps!! (^-^)

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and mark me the brainliest !!!


Related Questions

Please help pic is below!

Answers

Answer:

I cant explain it but I'm going to say 6 I haven't done this in a while but I say 6

If it took 4 hours to clean 10 houses, how many houses could be cleaned in 8 hours?

Answers

Answer:

20

(10 in 4) x 2

10 in 4 & 10 in 4

10 + 10

4 + 4

20 in 8

PLS HELP,, TIMED (SERIOUS ANSWERS PLS)

Which statement correctly interprets Limit of StartFraction 28 x minus 10 x squared Over 4 x squared minus 1 EndFraction as x approaches plus-or-minus infinity?

Answers

Answer:

D on ED

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Edge 2022

WRITE THE RATIO: A cookie recipe calls for 1 cup of flour to make 24 cookies. Create a proportion to show how many cups of flour are needed to make 36 cookies

Answers

Answer:

1&(1/2) or 1.5 or 3/2 cups flour needed for 36 cookies

Step-by-step explanation:

Flour : Cookie ratio (Flour needed to make particular cookie) = 1 : 24

1 cup flour make 24 cookies, so 1/2 cup floor make 12 (half) cookies.

So, 1&(1/2) or 1.5 or 3/2 cups would make 24 + 12, ie = 36 cookies

Alternatively

Multiplying numerator & denominator of fractional ratio 1 : 24 with 1.5 each

(1 x 1.5) : (24 x 1.5)

It implies 1.5 : 36 flour cookie ratio

What is the simplified version of Square root of 3÷512

Answers

Answer:

(1/32)√6

Step-by-step explanation:

Symbolically, this is

   √(3/512)                                   3

which can be rewritten as √(-------------

                                                 2√256

The advantage of doing this is that 256 is a perfect square.  We now have:

       3               √3          √3√2             √6            √6

√(-----------) = ------------ = ------------  =  ----------  =  ----------

    2(256)        16√2        16(√2)²         16(2)           32

what is the length and width of a bedroom

Answers

Answer:

Well it depends on what your talking about because it could be a big room, small room, we dont know there is no numbers no nothing so sorry I cant help you

Step-by-step explanation:

Seventy-two percent of the shareholders in a service corporation are women. If the
corporation is owned by 12,000 people, how many shareholders are men?

Answers

Answer:

Super easy, 3360

Step-by-step explanation:

just multiply the total amount by the missing percentage and BOOM you got your answer

0.28 times 12,000 and boom problem solved

now go read a book

answer only if you know and NOT because you want brainliest ( ill report you if you do )

Answers

12x6.5x1.25=97.5 cubic centimeters answer B

i'll give you a brainliestt

Answers

The answer is 1,4. Hope that helps.

the amount a worker is paid in his entire career​

Answers

It might be Annual salary?

Select the correct answer. What is the quotient when (16x^4 + 40x^3 - 24x^2) is divided by 8x^2?

pls pls pls help:((

Answers

Answer:

 (2x - 1) 4

STEP

1

:

Equation at the end of step 1

 ((((16•(x4))-(32•(x3)))+(23•3x2))-8x)+1

STEP  

2

:

Equation at the end of step

2

:

 ((((16•(x4))-25x3)+(23•3x2))-8x)+1

STEP  

3

:

Equation at the end of step

3

:

 (((24x4 -  25x3) +  (23•3x2)) -  8x) +  1

Expand logarithm equation

Answers

Answer:

[tex] log_{2}(x) + log_{2}(y) + log_{2}(z)[/tex]

Step-by-step explanation:

[tex]5 log_{2}(xyz)^{ \frac{1}{5} } \\ \\ = 5 \times \frac{1}{5} log_{2}(xyz) \\ \\ = log_{2}(xyz) \\ \\ = log_{2}(x) + log_{2}(y) + log_{2}(z)[/tex]

How does making a frequency table or line plot help you see which value occurs most often in a data set? NO LINKS

Answers

Answer:

DONT USE THE LINKKKKK

Step-by-step explanation:

Help plzzz, even just a explanation on how to do this would be a huge help (30 points bc there’s 3 problems)

Answers

Answer:

1. 8.5 same side as the side on the left (congruent)

2. 65° same as opposite angle (congruent angles)

3. 7.2 E is the midpoint so its the same as that measurement

#5 - AB = 8.5

#6 - 65 degrees

#7 - BE = 7.2

100 students participate in sport or music.60 participate in sports and 50 participate in music. How many students participate in both activities?Using Venn-diagram,find the number of students who participate only in music.​

Answers

Answer:

since there's only 100 students how can 60 participate in sport and 50 participate in music, that must mean there is 110 students right?

if there are a 100 students 60 cant participate in sports and 50 in music you’ll need 110 students

What is angle m1, m2 and m3?

Answers

m1 = 100
m2 = 80
m3 = 100
:))))))))))

slove the following
equation without with out transporting I)5y +10=4y-10​

Answers

The answer is y= -20

1 point
Emily is baking chocolate cupcakes. Each batch of cupcakes requires cups of cocoa. If Emily has 3
cups of cocoa, how many batches of cupcakes will she be able to make?

Answers

how many cups does she have? you didn't day

Martin is an artist who molds plaster into unique shapes.
How much plaster can Martin fit into the mold shown?

Answers

Answer:

It is A. I took the test,

Step-by-step explanation:

its 66 and then the little 3

Someone answer quick and right.
13points

Answers

Answer:

no

Step-by-step explanation:

A baseball has a diameter of 3.5 inches. Find the volume of the baseball. Round your answer to the nearest tenth. Use 3.14 for π. The volume of the baseball is about in3.

Answers

38.48.........................

Find the sum of 7x + 3 and 4x2 -5.​

Answers

Answer:

[tex]4x^2+7x-2[/tex]

Step-by-step explanation:

group like terms: [tex]4x^2+7x+3-5[/tex]

subtract 5 from 3: 3-5=-2

[tex]4x^2+7x-2[/tex]

Find the value of the expression (3x – 12) - (xy - 10) for x = 3 and y = 6.
O 4
0 -3
0 - 4
-2

Answers

Step-by-step explanation:

answer is -11 after you simplifying

-11 is the answer after simplifying

If P and Q are two sets then n( P-Q) means ?

Answers

[tex]\huge{\mathbb{ \tt{ANSWER}}}[/tex]

I shall use the symbol U for union

^ for intersection

~ for complement

----------------------------------------------------------------------------------------------------

The property of set subtraction states that for any sets X and Y, X-Y = X ^ Y~

That is in words, X throw away Y is the same as the intersection of X and the complement of Y

or X and anything NOT in Y

At the SET level, the proof looks like this:

(P-Q) U (Q-P) = « given

(P^Q~) U (Q ^ P~) = « property of set subtraction

(P U Q) ^ (P U P~) ^ (Q~ U Q) ^ (Q~ U P~) = « distributive property

(P u Q) ^ (Q~ U P~) = « Union of any set with it's complement is the universal

set which gets dropped by any intersection of a non-universal set

(P u Q ) ^ (Q ^ P)~ = « De Morgan's Law

(P u Q) - (Q ^ P) = « property of set subtraction

(P u Q) - (P ^ Q) « commutative property

----------------------------------------------------------------------------------------------------

At the ELEMENT level, the proof looks like this:

» Proves left side is subset of right side

If x is in (P-Q) U (Q-P) then x is in (P-Q) OR x is in (Q-P)

If x is in P-Q then x is in P but not in Q.

Then X is in P U Q.

Since x is not in Q, x is NOT in P ^ Q

Hence x is in P U Q but NOT in P^Q, which

means it is an element if (P U Q) - (P ^ Q)

Therefore x is an element of the set defined by the right side, which means (P-Q) U (Q-P) is a subset of (P U Q) - (P ^ Q)

« proves right side is subset of the left side

If x is an element of (P U Q) - (P ^ Q) then

x is in (P U Q) but NOT in (P^Q)

Since x is in P U Q, x is in P OR x is in Q.

Since x is NOT in (P^Q) then x is NOT in BOTH P and Q.

Hence x is in either P or Q but not both.

If x is in P, then x is not in Q, so x is in P-Q.

Therefore x is in (P-Q) U (Q-P).if x is in Q, then x is not in P, so x is in Q-P.Therefore x is in (Q-P) U (P-Q).There x is an element of set defined by the left side, which menas (P u Q)-(P ^Q) is a subset of (P-Q) U (Q-P).

#CarryOnLearning

#LetsEnjoyTheSummer

»X x K i m 0 2 x X

A rectangle has vertices A(0, 0), B(0, 9), C(4, 9), and D(4, 0). What is the perimeter of the rectangle

Answers

Answer:

26 units

Step-by-step explanation:

A rectangle has vertices A(0, 0), B(0, 9), C(4, 9), and D(4, 0). What is the perimeter of the rectangle

We have to find the length of the sides of the rectangle using the formula below

= √(x2 - x1)² + (y2 - y1)² when given vertices (x1, y1) and (x2, y2)

For side AB

A(0, 0), B(0, 9)

= √(0 - 0)² + (9 - 0)²

= √0 + 81

= √81

= 9 units

For side BC

B(0, 9), C(4, 9)

= √(4 - 0)² + (9 - 9)²

= √4² + 0²

= √16

= 4 units

For side CD

C(4, 9), and D(4, 0)

= √(4 - 4)² + (9 - 0)²

= √0² + 9²

= √81

= 9 units

For side AD

A(0, 0), D(4, 0).

= √(4 - 0)² + (0 - 0)²

= √4² + 0

= √16

= 4 units

We can see than

AB = CD = 9 units

BC = AD = 4 units

The perimeter of a rectangle = 2(L + W)

From the above calculation

Length = 4 units

Width = 9 units

Perimeter = 2(4 + 9) units

= 2 × 13 units

= 26 units

Carol's car average is 17.1 miles per gallon in City driving and 24.7 miles per gallon in highway driving if she drove a total of 513.0 miles on 26 gallons of gas how many of the gallons were used for City driving​

Answers

Answer:

the volume of the gas used for city driving is 17 gallons

Step-by-step explanation:

Given;

average speed for city driving, v₁ = 17.1 miles per gallon

average speed for highway driving, v₂ = 24.7 miles per gallon

total distance traveled, d = 513 miles

total gallon of gas used, t = 26 gallons

Let the volume of gas used for city driving = x

Also, let the volume used for highway driving = y

x + y = 26 -------- (1)

17.1x + 24.7y = 513   ------------(2)

From equation (1); y = 26 - x

Substitute the value of y in equation (2)

17.1x   +   24.7(26-x)   =  513

17.1x   +   642.2   -    24.7x       =    513

17.1x  -  24.7x  =  513   -   642.2

-7.6x   = -129.2

x = 129.2/7.6

x = 17 gallons

Therefore, the volume of the gas used for city driving is 17 gallons

This is not a math question ofc... but I want to know if y’all guys like anime?
1.Yes
2.No
3.why.....

Answers

Yeah I like animes because i find quite a few diverse storylines that i dont find in the rest of cinema.

UM YES! My favorite is Attack On Titans

The 5-foot pole casts a shadow of 3 feet. The building casts a shadow of 12 feet. What is the height of the building?​

Answers

Answer:

20 ft

Step-by-step explanation:

Because your are scaling the shadow by 4, you have to scale the height by 4

Answer: 20 foot tall.

Step-by-step explanation: the shadow of the pole is 3 feet. and the shadow from the building is 12 feet.

12 can be divided by 3, 4 times. we know for every 3 foot shadow, the actual object is 5 feet tall.

we just multiply 5 by 4 to get 20.

we can also check our work by dividing 3 by 5. this is 0.6.

then we divide 12 by 20. that is also 0.6.

hence that is the answer.

select all expressions that are equivalent to 3x - 2 (x - ) - 1
A.) -9 + x
B.) x + 7
C.) 3x - 2x - 8 - 1
D.) 3x - 2x + 8 - 1

Answers

Answer:

a

Step-by-step explanation:

What is the area of kite QRST? If necessary, round to the nearest tenth.

Answers

Answer:

Area of kite = 17 feet²

Step-by-step explanation:

Given:

For big triangle;

Length of base = 5.2 feet

Length of height = 2.5 feet

For small triangle;

Length of base = 1.6 feet

Length of height = 2.5 feet

Find:

Area of kite

Computation:

Area of kite = 2[Area of big tringle] + 2[Area of small triangle]

Area of kite = 2[(1/2)(b)(h)] + 2[(1/2)(B)(H)]

Area of kite = [(5.2)(2.5)] + [(1.6)(2.5)]

Area of kite = 13 + 4

Area of kite = 17 feet²

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