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Vinvika [58]
3 years ago
13

How many solutions does this equation have? -7k-2=-9k+10

Mathematics
1 answer:
inysia [295]3 years ago
5 0

Answer: k = 6

Step-by-step explanation: only one solution

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Corn costs 99 cents per pound, and beans cost 45 cents per pound. If Shea buys 24 total pounds of corn and beans, and it costs $
viva [34]
Shea bought 13.5 pounds of corn

c = pounds of corn
b = pounds of beans

Here’s what we know:
c(0.99) + b(0.45) = 18.09
c + b = 24

Solve the second equation for c in terms of b

c = 24-b

Substitute that expression for c in our first equation to get a numerical solution for b:

0.99 (24-b) + 0.45b = 18.09
23.76 - 0.99b + 0.45b = 18.09
-0.54b = -5.67
b = 10.5

Substitute that value to get a numerical value for c:

c = 24 - b
c = 24 - 10.5
c = 13.5

Check the math:

0.99(13.5) + 0.45(10.5) =
13.365 + 4.725 = 18.09
4 0
3 years ago
Julia worked on her chores from 3:15 until 4:00 how long did julia work
Dafna1 [17]
45 minutes i m sure all you do is count up or subtract 60 from 15
7 0
3 years ago
Read 2 more answers
Safiya deposited money into a bank account that earned 6.5% simple interest each year. After 3 1/2 years, she had earned $36.40
N76 [4]

Answer:

$1,792

Step-by-step explanation:

3 1/2×36.40=116.48

116.48÷6.5%=1,792

$1,792

5 0
3 years ago
PLEASE HELP I WILL MARK BRAINLIEST
Lelu [443]

Answer:

27 \:  {km}^{2}

Step-by-step explanation:

Given is the shape of a trapezoid.

Therefore,

Area of the trapezoid

=  \frac{1}{2} (2 + 7) \times 6 \\  \\  = 9 \times 3 \\  \\  = 27 \:  {km}^{2}

5 0
3 years ago
Find the value of x. Then tell whether the side lengths from a Pythagorean triple sides 20,16 find x
Tema [17]

Answer:

x = 12

Step-by-step explanation:

Pythagorean triplet

12,16,20

So, the value of x is 12

x + 256 = 400

x = 400 - 256

x = 144

The square of 12 is 144

6 0
3 years ago
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