2 years ago

For what value of a do the lines 5x–2y=3 and x+y=a intersect at a point on the y-axis?

Mathematics

1 answer:

inna [77]2 years ago

5 0

Answer:

a = -3/2

Step-by-step explanation:

You can set x=0 and solve for y to find the y-intercept in each case.

first equation: y-intercept = -3/2

second equation: y-intercept = a

To make these equal, we must have ...

a = -3/2

You might be interested in

Three apple pies, all the following shape, are left on a counter. How much total pie has been left?

faltersainse [42]

1 pie is the total pieeeeeeeeeee

6 0

2 years ago

What is 5,820,000,000 written in scientific notation?

Ksenya-84 [330]

Answer:

Step-by-step explanation:

the decimal would have to move 9 times from the zero position to get to between 5 and 8.

so 5.82 x 10^9

5 0

2 years ago

Read 2 more answers

If a gas-filled balloon rises 40 feet in the 1st minute, 60 feet in the 2nd minute, and 80 feet in the 3rd minute, how many feet

tresset_1 [31]

The distance traveled by the balloon in every minute makes an arithmetic sequence with a first term equal to 40 ft and common difference equal to 20. The nth term of an arithmetic sequence is calculated by,
an = a1 + (n - 1) x d
Substituting,
an = 40 + (15 - 1) x 20 = 320
Thus, the answer is letter B. 320 feet.

7 0

2 years ago

Which expression is equivalent to<br> (r-7)6?

lapo4ka [179]

Answer:

Step-by-step explanation:

The expression equivalent to

$( r^{-7})^{6} \\is\\\frac{1}{r^{42} }$