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Sophie [7]
4 years ago
5

Please help with this question. Thank you.

Mathematics
1 answer:
podryga [215]4 years ago
5 0

Answer:

t = 4

Step-by-step explanation:

Substitute the variables with the information provided.

205 = 100 + 12(6) + 5(t) + 7(4) + 5(5) - 8(5)

Simplify

205 = 100 + 72 + 5t + 28 + 25 - 40

20 = 5t

t = 4

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a park is shaped like a rectangle with a length 3 times its width w. what is a symplified expression for the distance between op
Rainbow [258]
Let the width of the park be; w

width=w
length=3w
 
and let the distance between opposite corners of the park be; d

then the expression is; (w)squared +(3w)squared = (d) squared
7 0
3 years ago
A diving bell is descending at a rate of 40 m per second. How many meters will it have descended after 15 seconds? Write the cha
ss7ja [257]

Answer:

40x15= x

Step-by-step explanation:

x=400

7 0
3 years ago
Martina read that approximately 10% of all people are left-handed. She wants to design a
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Answer:

15%

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3 0
4 years ago
Ryan and Marie had some marbles. if Ryan lost `15 marbles, he would have 4 times as many marbles as Marie. If Ryan lost 75 marbl
vaieri [72.5K]
Ryan's marbles   =  x
Marie has 4 times less marbles then Ryan would have if he lost 15 marbles (it means he would have x-15)
So, Marie marbles  =  (x-15):4
If Ryan lost 75 marbles (it means he would have x-75), he would have 1 1/2 times as many marbles as Marie.

We got an equation:                                  x-75=1\frac{1}2\cdot\frac{x-15}{4}

                                                                  x-75=\frac{3}2\cdot\frac{x-15}{4}

Multiply both sides by 8:                            8x-8\cdot75=3\cdot(x-15)

                                                                  8x-600=3x-45

Add 600 and subtract 3x on both sides:    5x=555

Divide both sides by 5:                               x=111


Answer:    Ryan have 111 marbles.

5 0
3 years ago
Please help me on this question asap!
alekssr [168]

Answer:

see explanation

Step-by-step explanation:

ΔABE and ΔACD are similar hence the ratios of corresponding sides are equal, that is

\frac{AB}{AC} = \frac{AE}{ED} = \frac{BE}{CD}

Using the first pair of ratios then

\frac{20}{5} = 4 = \frac{26}{ED}, hence

4ED = 26 ( divide both sides by 4 )

ED = 6.5 cm

------------------------------------------------------------------

(b)

Similarly

\frac{BE}{18} = 4, hence

BE = 4 × 18 = 72 cm

4 0
3 years ago
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