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3 years ago

12

Can someone plz help me solved this problem! I really need help ASAP! Will mark you as brainiest!

2 answers:

Ivahew [28]3 years ago

6 0

Answer:

a) k = 3 b) k = 4

Step-by-step explanation:

a) 3 x 7 = 21

b) 4 x 3 = 12

pogonyaev3 years ago

5 0

Answer:

1) k=3 (2) k=4

Step-by-step explanation:

$21=k\cdot \:7\quad \\\mathrm{Switch\:sides}\\k\cdot \:7=21\\\frac{k\cdot \:7}{7}=\frac{21}{7}\\k=3\\2)\\12=k\cdot \:3\\Switch\:sides\\k\cdot \:3=12\\\frac{k\cdot \:3}{3}=\frac{12}{3}\\k=4$

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Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original

Ivanshal [37]

Answer:

1.25 hours or 1 hour and 15 minutes

Step-by-step explanation:

<em>Question</em>

<em>Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original height every hour. </em>
<em>Please complete the following sentence by writing the number in the blank. Until the candle has been burning for at least _______ hours, the height of Jennifer's candle will be more than 7 inches.</em>

<u>Candle looses 10% of 8 inches, it equals:</u>

8*0.1 = 0.8 inches an hour

<u>Let x be required time, then:</u>

8 - 0.8x > 7
0.8x < 8 - 7
0.8x < 1
x < 1/0.8
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7 0

3 years ago

A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint I order to make green paint.Which ratio of gallons of

julia-pushkina [17]

Answer:

10:18 10 gal of blue paint and 18 gal of yellow paint.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

18) mZVST<br> -37.8 +2<br> T.<br> +20<br> -27x-3

Burka [1]

Answer:

m∠VST = 105°

Step-by-step explanation:

Two central angles are marked as having the same measure. The measure of the corresponding arcs are the same. The sum of all arc measures is 360°.

(-37x +2) +2(-27x -3) = 360

-91x -4 = 360

-91x = 364

x = -4

m∠VST = (-27(-4) -3) = 105 . . . . degrees

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4 years ago

A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C

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$y = 50x+ 80$

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3 years ago

(0,2) (4.5,0) distance formula

miskamm [114]

The distance between them = 4.93

Step-by-step explanation:

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Now putting the values of (0,2) and (4.5, 0) we get,

$\sqrt{(0-2)^{2}+(4.5-0)^{2} }$

= $\sqrt{24.25}$ = 4.93 (approx)

8 0

3 years ago

Read 2 more answers