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belka [17]
3 years ago
14

Evaluate 7^2 + (4x5) - 2^3

Mathematics
1 answer:
leva [86]3 years ago
8 0

Remember PEMDAS! Do the parenthesis first so 4x5 is 20. So now write it out as 7^2+20-2^3 now next is exponents. 7x7 is 49 and -2x-2x-2 is -8. now write it as 49+20+-8. Now solve from left to right. 49+20 is 69 now subtract 8 which is 61. 61 is your answer! I hope this worked!

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8 and 4 / 9 divided by 2 and 1 / 9<br><br><br> 10 points<br><br> Please show work
Vinil7 [7]
Dydyeufogofififudugjdid7fogo

7 0
3 years ago
A wooden board 100 centimeters long is cut into two pieces. One piece is 16 centimeters longer than the other. What are the leng
Bezzdna [24]

x = the length of one piece

y = the length of the other piece


the total length is 100 cm this means 


x + y = 100


one piece is 16 inches longer than the other


first we need to convert inches to cm: 


1 in = 2.54 cm

16 in = 2.54*16 = 40.64


now we can write


x = y + 40.64


by solving the system of equations


x + y = 100

x = y + 40.64


we find


x = 70.32 cm


y = 29.68 cm


the lengths of the two pieces are 70.32 cm and 29.68 cm.

4 0
3 years ago
WILL GIVE BRAINLIEST
kifflom [539]
Speed boat departed 1.75 hrs after steam boat1.8 hrs after speed boat departure, steam boat has sailed for a total: 1.8+1.75 = 3.55 hrssteam boat's speed is 36.8 km/hr, so it has traveled: 3.55*36.8 = 130.64 km
speed boat is 86.9 km behind steam boat. so it is 130.64-86.9 = 43.74 km from portspeed boat's speed = 43.74/1.8 = 24.3 km/hr

8 0
3 years ago
Read 2 more answers
How many times do 4896 go into 48?
EleoNora [17]
If you are asking how many times 48 goes into 4896 it is 102

4896÷48= 102

hopefully it helps ;)
4 0
3 years ago
PLS HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS!!<br> WHAT IS M∠1?
TEA [102]

Answer:

angle 1=135°

Step-by-step explanation:

to find the angle of 1 you should know angle 2, what is angle 2?

angle 45° and angle 1 are symetrical so they have the same value.

now that we know that angle 2 is equal to 45°

then what is angle 1

if the whole line has an angle of 180° and angle 45°.

so the equation will be :

45+x=180

flip the equation to find x:

180-45=x

180-45=x\\135=x\\x=the angle 1 which we found in the given equation is 135

check if my answer is correct is :

135+45=180\\180=180

my equation is correct

8 0
2 years ago
Read 2 more answers
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