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frozen [14]
3 years ago
11

HELP PLEASE! Im struggling

Mathematics
1 answer:
kondaur [170]3 years ago
6 0

Answer:

c. \dfrac{2}{3}

Step-by-step explanation:

Let the common ratio be r.

a_2 = \dfrac{2}{5}

a_3 = \dfrac{2}{5}r

a_4 = \dfrac{2}{5}r^2

a_5 = \dfrac{2}{5}r^3

We are told that a_5 = \dfrac{16}{135}.

\dfrac{2}{5}r^3 = \dfrac{16}{135}

\dfrac{5}{2} \times \dfrac{2}{5}r^3 = \dfrac{5}{2} \times \dfrac{16}{135}

r^3 = \dfrac{8}{27}

r = \sqrt[3]{\dfrac{8}{27}}

r = \dfrac{2}{3}

Answer: c. \dfrac{2}{3}

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A, B & C form a triangle where
andrew-mc [135]

Answer:

16.5mm to. 1 decimal place

Step-by-step explanation:

Please check attachment for diagrammatic representation of the triangle.

Since one of the angles of the triangle is 90, this means that we are dealing with a right angled triangle

To find the length of AC, we make use of pythagoras’ theorem which states that the square of the hypotenuse equals the sum of the square of the other two sides. The hypotenuse is the longest side of the triangle which we have as 17.88 mm

Mathematically therefore

17.8^2 = 6.6^2 + AC^2

AC^2 = 17.8^2 - 6.6^2

AC^2 = 283.28

AC = √(273.28)

AC = 16.53 mm

This is 16.5 to 1 decimal place

7 0
3 years ago
I need this done asap
Norma-Jean [14]

Answer:

They both have 1/2

Step-by-step explanation:

For the first one there are 6 numbers and 3 of them are odd. That makes it 1/2.

For the second one it is self explanatory.

3 0
2 years ago
Read 2 more answers
HELP ME I NEED TO FIND THE SLOPEEE!!
N76 [4]

Answer:

y=3/4 x+1

Step-by-step explanation:

first you start with y=mx+b find the y intercept first which is 1 next you just count down the block which is 3 then count to the right till you find a spot where it lands which would get you y=3/4+1

5 0
2 years ago
Read 2 more answers
What is 7•8+1•40. Explain your answer
zaharov [31]

Answer:

96

Step-by-step explanation:

We will use the order of operations to solve the equation

7×8+1×40

multiplication before addition, so we do this first:

7×8=56

We change the equation to this:

56+1×40

Then we multiply:

1×40=40

We change the equation to this:

56+40

Then we add to solve:

56+40=96

3 0
3 years ago
The results of a car race are shown. How much faster did Evans drive per lap than loza?
Lelechka [254]
Evans finishes 42 laps in 96,6 mins and Loza finished 38 laps in 102,6 mins

Evans. 96,6÷42= 2,30 mins
Loza . 102,6÷38= 2,70 mins

2,70 mins - 2,30 mins
= 40 secs and Evan is faster with 40secs in each lap.
8 0
4 years ago
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