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Likurg_2 [28]
3 years ago
13

3x + 8y = −3 2x + 5y = −3

Mathematics
1 answer:
kolbaska11 [484]3 years ago
4 0

Answer:

1. x= −8/ 3 y−1

2. x= −5/ 2 y+ −3/ 2

Step-by-step explanation:

You might be interested in
Express 8 1/5% as a mixed number or a fraction
Alexxandr [17]

Answer:

41/5

Step-by-step explanation:

First we change the 8 and 1/5% to 8.2%

Write the fraction down as a number over one = 8.2/1

Multiply both top and bottom by 10 for every number after the decimal point:

As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,

8.2/1 = (8.2 × 10)

(1 × 10) = 82/10

Reduce the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD (82,10) = 2. So, (82÷2)/(10÷2) = 41/5 when reduced to the simplest form.

As the numerator is greater than the denominator, we have an IMPROPER fraction, so we can also express it as a MIXED NUMBER, thus 82/10 is also equal to 81/5 when expressed as a mixed number.

7 0
3 years ago
12 ft. 7 ft. what is the Hypotenuse<br>​
melisa1 [442]

Answer:

13.89

Step-by-step explanation:

12² + 7²  = C

144 + 49 = 193

√193 = 13.89

round it if u want

5 0
3 years ago
What is the volume of a sphere with an 8 cm radius
Kitty [74]

Answer:

Approx. 2140.16 cubic centimeters

Step-by-step explanation:

Volume=\frac{4}{3}\pi r^{3}  \\V=\frac{4}{3}(3.14)(8)^{3}  \\V=4.18(8)^{3} \\V=4.18(512) \\V=2140.16

8 0
2 years ago
suppose y varies jointly as x and z. Find y when when x =-4 and z=25, if y=206 when x=-6 and z=-11. Round your answer to the nea
EastWind [94]
Y = kxz
Find k first to get the equation.
206 = k*(6*11)
206 = 66*k
Divide both sides by 66.
3.12 = k

y = 3.12xz
y = 3.12(-4*25)
y = 3.12(-100)
y = -312
3 0
3 years ago
Solve 3^(2x) = 7^(x_1).
bulgar [2K]
<span>x=1−<span><span>log9</span><span>log7</span></span>=−0.12915</span><span>, nearly.</span>
4 0
4 years ago
Read 2 more answers
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