Mathematics Middle School

"Evaluate the expression.
78 - 2^4 ÷ (14 - 6) x 2"
please explain how you get your answer.
thanks

Answers

Answer 1

Answer:

equal to 74

Step-by-step explanation:

To evaluate the expression, we will follow the order of operations (PEMDAS):

Start with the exponent: 2^4 = 16Next, evaluate the division: 14 - 6 = 8Then, divide 16 by 8: 16 ÷ 8 = 2Next, multiply the result by 2: 2 x 2 = 4Finally, subtract 4 from 78: 78 - 4 = 74

So the expression 78 - 2^4 ÷ (14 - 6) x 2 is equal to 74.

Answer 2
Let’s use pemdas or bodmas
Let’s solve separately first

2^4 = 2’s power 4 = 2*2*2*2 = 16
14-6 = 8
2” = 2*2 = 4

78 - 16 / 8 * 4
= 78 - 2 * 4
= 78 - 8 = 70

Related Questions

i put a pin below its math

Answers

Answer: Pretty positive it would be 2/12 because the bottom numbers are the same so nothing happens to them. 5-3 is 2 so 2/12

Step-by-step explanation:

Pls, help me with this question!!!

Answers

Answer: the answer is 6

Step-by-step explanation:

Roger made cookies and gave three tenths of the cookies to his friend Paul. He then gave away another five tenths to his friend Rebecca. What fraction of his cookies did Roger give away in all?

a. eight tenths of his cookies
b. five tenths of his cookies
c. three tenths of his cookies
d. two tenths of his cookies

Answers

The answer is A. Eight tenths of his cookies.
A is the correct answer

From midnight to 2:00 am, the temperature rose
1.55
1.55°C each hour. If the temperature at midnight was
−
7
−7°C, what was the temperature at 2:00 am?

Answers

Answer:

-3.90

Step-by-step explanation:

1) 1.55+1.55 =3.10

2) -7+3.10= (-3.90)

The answer is -3.9 degrees Celsius because 1.55+1.55=3.10 (We do this because 1h= +1.55 so 2h = +3.10) and then we do -7+3.10= 3.90 degrees Celsius (we do this because we do the initial temperature plus the temperature risen in 2 hours)

∠1 ​ and ∠2 are supplementary.


m∠1=124°
m∠2=(2x+4)°


What is the value of x?


Options:


13


26


40


36


41

Answers

Answer:26

Step-by-step explanation:Since angles 1 and 2 are supplementary, it follows that there sum is 180°.

On this note;

Sum of 1 and 2 is;

180 = 124 + (2x + 4)°

(2x + 4)° = 180 -124

2x = 56 -4

2x = 52

x = 26°.

Help me!!

What word in the English language does the following: the first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Answers

Heroine. Explanation: The first two letter i.e. 'he' refers to male person, the first 3 letters i.e. 'her' denotes female, the first 4 letter i.e. 'hero' means a great personality while the whole world i.e. heroine is the great woman.

The felt costs 9¢ per square inch. She will only pay for the felt used to cover the box, even if there is waste or extra. How much money did Hazel spend on the felt? (1 point)

a
$18.18

b
$27.72

c
$36.36

d
$45.54

Answers

Answer:

C. $36.36

Step-by-step explanation:

You need to find the surface area of the box. Then, calculate how much it will cost.

SA = 2(wl + hl + hw)

SA = 2([11*8] + [6*8] + [6*11])

SA = 2(88 + 48 + 66)

SA = 2(202)

SA = 404 inches

9 cents per inch

0.09*404 = 36.36

The triangle shown on the coordinate grid is translated 6 units to the right and 3 units down.
Which would be the measure of an angle of the resulting triangle?
(ignore the answer i choose lol) but pls help me

Answers

Answer:

75°

Step-by-step explanation:

Even if a triangle is translated, the original shape stays the same.

So, to get the answer, first add the first two angles of the triangle:

60 + 45 = 105

Then, subtract from 180, because 180 is equaled to all the angles added up on any triangle:

180 - 105 = 75.

So, you get 75°.

factor the polynomial an-mn-n^2+ma

Answers

Answer:

Reformatting the input :Changes made to your input should not affect the solution: (1): "n2"   was replaced by   "n^2".  1 more similar replacement(s).STEP 1:Trying to factor a multi variable polynomial  1.1    Factoring    m2 - mn + n2 Try to factor this multi-variable trinomial using trial and error  Factorization failsFinal result :  m2 - mn + n2

Step-by-step explanation:

.

Need help ASAP please

Answers

volume = 0.5 * b * h * length
So 0.5*1 1/2*2*4 =6
V=6
volume =0.5* b* h * length
So 0.5*1 1/2*2*4 =6
Volume=6cm^3

The expression 6x^2 gives the surface of a cube and the expression x^3 gives the volume of a cube where x is the length on one side of the cube. Find the surface area and the volume of cube with a length of 2 m

Answers

Answer: the answer is 24 & 8 look at the image for the explanation

Step-by-step explanation:

If rectangle ABCD is transformed to create rectangle A’B’C’D’, and the rule used was (x, y) --> (x, -y), which transformation has occurred?

A) Reflection across the y-axis
B) Reflection across the x-axis
C) Rotation of 90° around the origin
D) Translation

Answers

Answer: A) Reflection across the y-axis

PLEASE ANSWER hurry i need the answer

Answers

Answer: B

The poster is formed by a triangle and a rectangle, with their formula for the area being [tex]\frac{1}{2}[/tex] x base x height and base x height respectively.

Therefore, the area is  [tex]\frac{1}{2}[/tex] x 27cm x 12cm + 20cm x 15cm, answer being 462cm2 (b) .

b is the correct answer i think

write as a product bx^2+2b^2-b^3-2x^2

Answers

bx2 + 2b2 - b3 - 2x2 = (bx2 - b3) + (2b2 - 2x2)

= b(x2 - b2) - 2(x2 - b2)

= (x2 - b2)(b - 2)

= (x-b)(x+b)(b-2)
Bx2 + 2b2 - b3 - 2x2
B6 + x4

"Evaluate each expression if a = 9, b = 3
15b + a^2"

Answers

Answer:

The answer for the expression is 126! Hope it helps!


Substitute
15(3) +9(9)
45+81
126

Candy has some money
She bought a drink for £ 1.45 and a piece of cake for £ 1.20
She now has two thirds of her money left.

How much money did Candy have to start with

Answers

Answer:

7.95

Explanation:

1.45+1.20= 2.65

2.65x3=7.95

rite an addition equation to show how you decomposed
7/6
.

Answers

Answer:

For the fraction model, fill the whole left bar, and only 1 in the right bar.

The addition equation is:

⅙ + ⅙ + ⅙ + ⅙ + ⅙ + ⅙ + ⅙ = 7/6

Explanation:

Since the bar is divided into sixths (1/6 each), just count by 1/6 each time you fill each one and use the equation to represent the process.

Worth 20 pts:

There are many cylinders with a height of 18 meters. Let r
Represent the radius in meters and v represent the volume in cubic meters.

Complete he equation that represents the volume v as a function of the radius r.

Complete the table:

Answers

Answer: 18, 72, 288

Step-by-step explanation:

The formula for cylinder volume is V=π r^2 h

Substitute: radius =1 and height =18

V= 18 pi

radius=2

V=72 pi

radius=4

V= 288 pi

Of course, pi appears to already be written there for you :)

Hope this helps!
MM

Find the volumes to prove whether or not Alice is right.

Answers

The volume are at the top left corner

mathematics 20 points

Answers

112 I think …… do you agree ?

please help, i only need help on the surface area

Answers

Answer: 376

Step-by-step explanation:

Surface Area = 2×(2×14 + 2×10 + 14×10) = 376 feet

help me pls, i need correct answers

Answers

Answer:2.16

Step-by-step explanation:

factor the polynomial. an-mn-n^2+ma

Answers

Answer:

(a-n)(n+m)

Step-by-step explanation:

This is the answer for your problem.

PLS HELP ME I NEED AN ANSWER ASAP!!!!! I HAVE RSM ON VALENTINES DAY PLSSSSSSSSSSSSSSS HELP
If you invest $550.00 at a 4% interest rate, what will be the interest?

Answers

572 lalallalalalalllalajehehdhbdbd den beben

Need help ASAP please

Answers

V = l x w x h /3 = 8 x 8 x 12 /3 = 256

The volume would be 256.

8 times 8 times 12 then divide by 3 which is 256.

Mark translated trapezoid ABCD to trapezoid A’ B’ C’ D’. Vertex B was at (4,3). If B’ is now at (-2, 2), what did he have to do to get there?

A) move 6 left and 1 down
B) move 6 down and 1 left
C) move 2 left and 1 down
D) move 2 down and 1 left

Answers

Answer: A) move 6 left and 1 down

Step-by-step explanation:

4-6= -2

3-1=2

Please help me.................................

Answers

Answer: look at the image for the answer and the solution

Step-by-step explanation:

6 1/4 km: 1 1/4 minutes is the right answer

A set of eight cards were labeled with D, I, V, I, S, I, O, N. What is the sample space for choosing one card?

S = {V, S, I, D, I, I, N, O}
S = {D, I, S, O, N}
S = {V, I, O}
S = {D, I}

Answers

The answer is the 1 one S = (V,S.I,D,I,I,N,O)

Chau runs each lap in 7 minutes. He will run at most 8 laps today. What are the possible numbers of minutes he will run today?
Use T for the number of minutes he will run today.
Write your answer as an inequality solved for T.

Answers

Chau runs a total of 56 minutes

Help Please!
Question: select all the equations that can be represented by a straight line when graphed on the coordinate plane

B; u=7t³ -10
C: u=2t-5
D:u=8t-2
E u= 1/t +3
F: - 2t+ 3u=6
G: u=-4( t + 3)

Answers

C, D, F, G. Tip next time use Desmond graphing calculator it’s a free helpful tool
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