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Dominik [7]
2 years ago
9

Help me on all of the questions below plz

Mathematics
1 answer:
Lubov Fominskaja [6]2 years ago
7 0
1- The answer is that she wants the new time to be 32 minutes

Solution: The question asks that she wants to DECREASE by 20%

What you will do it convert 20% to a decimal (which is 0.20)

Then, you need to multiply the minutes by the decimal:

40 x 0.20 = 8 minutes

Now you know that 8 minutes will be 20% of 40 minutes, so you just subtract 8 from 40 UwU
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9. Carlos walked 8 miles in 3 hours. Leah walked 14 miles in 6 hours. Are these rates
grin007 [14]

Answer:

no, not proportional

Step-by-step explanation:

set up a proportion and see if cross-products are equal:

8/3 = 14/6

cross-multiply:

(8)(6) ≠ (14)(3)

48 ≠ 42

6 0
2 years ago
Simplify the expression where possible.<br><br> (-5 x 2 ) 3 help please!
MAXImum [283]
The answer to (-5 × 2) 3 = -30.
8 0
2 years ago
What is 3 2/5 x 2 1/3 ?
Hitman42 [59]
3 2/5 x 2 1/3 rewrite

12/5 x 7/3 convert into fractions instead of mixed fraction then multiply straight across

84/15 would be your final answer you might need to reduce it though :) hope i helped
5 0
3 years ago
Read 2 more answers
F(x)=- x ^ 2 - 1,x ne5\\ -3,x=5 lim x -&gt; 5 f(x) = lim x -&gt; 5 f(x) Find if
Wewaii [24]

Answer:

the answer to the question is 1

3 0
2 years ago
in circle o, points a and b lie on the circle such that OA=5x-11 and OB=4(x-1) what represents the length of the circle' s diame
AysviL [449]
We know that
if <span>points a and b lie on the circle  and O is the center
so
OA is the radius
OA=OB
5x-11=4(x-1)-----> 5x-11=4x-4----> 5x-4x=11-4-----> x=7
OA=5x-11-------> OA=5*7-11-----> OA=24  units

the diameter is (OA+OB)
2*OA------> 2*24------> 48 units</span>
3 0
3 years ago
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