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baherus [9]
3 years ago
13

Suppose y varies directly with x. Write a direct variation equation that relates x and y, y=25 when x=140 what is the value of x

when y=36 a) 140 b)165 c)201.6 d)176
Mathematics
1 answer:
In-s [12.5K]3 years ago
4 0
So the formula for direct variation is y=kxplug In the given values and you'll get 25=k140, solve for k and you get 5/28
so the equation is y=(5/28)xand the answer would be C
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algerbra. com The ninth graders at a high school are raising money by selling T-shirts and baseball caps. The number of T-shirts
My name is Ann [436]

Answer:

36 T-shirts and 12 Baseball Caps

Step-by-step explanation:

GIVEN: The ninth graders at a high school are raising money by selling T-shirts and baseball caps. The number of T-shirts sold was three times the number of caps. The profit they received for each T-shirt sold was \$5.00, and the profit on each cap was \$2.50.

TO FIND: If the students made a total profit of \$210, how many T-shirts and how many caps were sold.

SOLUTION:

Let the total number of T-shirts sold are =\text{t}

Let the total number of Baseball Caps sold are =\text{b}

Profit received on each T-shirt =\$5.00

Profit received on each Baseball Caps =\$2.50

Total profit received on T-shirts =\$5.00\text{t}

Total profit received on Baseball Caps =\$2.50\text{b}

5\text{t}+2.5\text{b}=210

Also,

The number of T-shirts sold was three times the number of caps.

        \text{t}=3\text{b}

putting in equation,

       5\times\text{3b}+2.5\text{b}=210

       17.5\text{b}=210

       \text{b}=12

       \text{t}=3\times12

       \text{t}=36

Hence total 36 t-shirts and 12 baseball Caps were sold.

     

6 0
4 years ago
1×1+9×(1/100)+1 ×(1/1,000)
Fittoniya [83]
Using PEMDAS
P = 1x1+9x(0.01)+1x(0.001)
E = no change
M = 1+0.09+0.001
D = no change
A = 1.091
S = no change
final answer is 1.091
8 0
3 years ago
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PLEASEE HELP FASTTT :(( Suppose point Tis between points R and V on a line. If RT = 6.3 units and RV = 13.1 units, then
topjm [15]

Answer:

6.8

Step-by-step explanation:

simply subtract the length of RT from RV

13.1 - 6.3

3 0
4 years ago
35% of the original price of a phone is £78 what was the original price ?
Yakvenalex [24]

Answer:

222.86

Step-by-step explanation:

<h2><u>in order to solve this question you can create an equation :</u></h2>

35% * x = 78

where x is the original amount

in order to get x , you have to say :

78/ 35% = x

hence x = 222.8571...

to 2dp = 222.86

4 0
3 years ago
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Find the sum of the first 6 terms of the following series, to the nearest integer.
natka813 [3]

Answer:

1008

Step-by-step explanation:

geometric sequence:

a=16

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Sum of GS:

s=a(1-r^n)/(1-r)

S(6)=16(1-2^6)/(1-2)

=1008

8 0
3 years ago
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