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m_a_m_a [10]
3 years ago
14

5.4+ 3(52-15 +2) What is it

Mathematics
2 answers:
AveGali [126]3 years ago
8 0

Answer:

122.4

Step-by-step explanation:

You need to use PEMDAS. First solve everything in the parenthesizes. So 52-15 is 37+2 is 39. Then do 3*39 which is 117. Then do 117+5.4 which is 122.4 :)

iragen [17]3 years ago
3 0

Answer:

122.4

Step-by-step explanation:

Remember PEMDAS

Parentheses

Exponents

Multiply

Divide

Add

Subtract

(52-15+2)=39

39x3=117

117+5.4=122.4

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A plane can fly 11 miles per minute. The plane will fly 6 trips, and each trip is 500 miles. How many hours will the plane fly?
Kamila [148]
\frac{500miles}{trip}\times6trips=3000miles
\frac{300miles}{\frac{11miles}{minute}}=272.72minue\approx4.54hrs
4 0
3 years ago
Simplify: Negative four and one-fifth minus negative thirteen and one-tenth
olga_2 [115]
-4 1÷5 - (- 13 1÷10)

first we should turn these into improper fractions by multiplying the whole number by the denominator then add the numerator.

4 × 5 = 20 + 1 = 21
13 × 10 = 130 + 1 = 131

(-21/5) - (-131/10)

To subtract fractions we want to find a common denominator so we can multiply the numerator and denominator of (-21/5) by 2 to get (-42/10)

(-42/10) - (-131/10)

Since we are subtracting a negative, that becomes a positive

(-42/10) + 131/10

131 - 42 = 89

89/10

Now we can change it back into a mixed fraction:

8 and nine-tenths or 8 9÷10
3 0
3 years ago
I need major help. I have a lot of missing work and really need help with algebra 1. (solving linear equations)
igor_vitrenko [27]
A= 5 + 2 = 7
You get this by doing the inverse operation so minus 2 by 2 and 7 then you get your answer so it should look like this
X+2= 7
-2. -2
———
X= 5

B: 15-4=11
+4. +4
————-
X= 15

C: 4(3) = 12

D: 50/5 = 10

Btw this should be easy, try doing it on to your own now.
6 0
3 years ago
Help please I need the answer (links are not appreciated) drop link and I report your answer ​
Lostsunrise [7]

Answer:

a, the number of pupils that like maths

b. we are given the number of students in the class and the percentage that like maths

c. percentage of students that like maths x total number of students

0.7 x 40

d. 0.7 x 40

28

Step-by-step explanation:

Number of pupils that like maths = percentage of students that like maths x total number of pupils in the class

(70 / 100) x 40 = 28 pupils

6 0
3 years ago
How many inches are there in 3.5 yard
Ann [662]

Answer:

126

Step-by-step explanation:

3.5 times 12 = 126


8 0
3 years ago
Read 2 more answers
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