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oksano4ka [1.4K]
3 years ago
15

A. (2 + 4) + 5( − 1) − ( + 7)

Mathematics
1 answer:
Novay_Z [31]3 years ago
8 0
A) -6
b) 49
c)23
d)-47
e)73
f)20
g)131
h)-79
i)48
j) 68
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Can you tell me whether this is subtraction or addition a table is 2 2/5 feet high a store is 7/8 feet shorter than the table ho
miss Akunina [59]

Answer:

Subtraction.

Step-by-step explanation:

As the question has said, 7/8 ft shorter than table which means you must substract it from the table's height.

For example :

if a stool is 7/8 ft longer than table which means you must add up the table's height

8 0
3 years ago
Subtract <br><br><br> - 3x 8 from 4x2 – 7x – 2.
Flauer [41]

-2 • (4x2from4 + 5x + 1)

Step-by-step explanation: Changes made to your input should not affect the solution:

(1): "x2"   was replaced by   "x^2".  1 more similar replacement(s).

(2): Dot was discarded near "2.".

STEP

1

:

Equation at the end of step 1

((-3x -  (23from4 • x2)) -  7x) -  2

STEP

2

:

STEP

3

:

Pulling out like terms

3.1     Pull out like factors :

 -8x2from4 - 10x - 2  =   -2 • (4x2from4 + 5x + 1)

Trying to factor a multi variable polynomial :

3.2    Factoring    4x2from4 + 5x + 1

8 0
3 years ago
A right triangle with side a being 7 and the hypotenuse is 8. Find the measure of the missing side length. Round your answer to
Virty [35]

Answer:

4

Step-by-step explanation:

use the Pythagoras' theorem

formula for an ABC triangle( right angled)

AB is height

BC is hypotenuse

CA is length

BC^{2} = AB^{2} + CA^{2}

in your case

AB is 7

BC is 8

CA is unknown so we write x

8^{2}=7^{2}+x^{2}

64=49+x^{2}

64-49=x^{2}

15=x^{2}

\sqrt{15} =x

3.87=x

4=x

7 0
3 years ago
Link rode his bike at a steady rate of 15 miles per hour for 2 1/2 hours. What distance did he travel
zvonat [6]
Answer: 37.5 miles
explanation: multiply the rate of speed by the amount of time in order to find the distance:

15 miles per hour x 2.5 hours
= 37.5 miles



6 0
4 years ago
There are 412 students and 20 teachers taking buses on a trip to a museum. Each bus can seat a maximum of 48. Which inequality g
marissa [1.9K]

Answer:

10  buses are needed.

9  buses will only be able to take 468 people.

Explanation:

There are  461  +  20  =  481  people altogether needing transport.  Each bus can take at most 52 people.  The number of buses needed =   482  ÷  52. 482  ÷  52  =  9.25  buses.  You might be tempted to round down to 9 buses (because of the 2 that follows the decimal)  However, if there are 9 buses,   9  ×  52  =  468  people can be taken  There will still be   13  people to be transported.  This is an example of where you need to round UP to the next whole number.   10  buses are needed.  In reality it means that not all the buses will be full, but 10 buses are needed to ensure that everyone gets a ride to the museum.

7 0
4 years ago
Read 2 more answers
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