All categories

3 years ago

Please help me on this question. First to answer will be the brainliest :D

Mathematics

1 answer:

motikmotik3 years ago

4 0

Answer:

t=−7

Step-by-step explanation:

FIRST

You might be interested in

Which linear function represents the line given by the point-slope equation y + 7 = –2/3(x + 6)?

Nuetrik [128]

Answer:

First option: $f(x)=-\frac{2}{3}x-11$

Step-by-step explanation:

Given the point-slope equation $y+7=-\frac{2}{3}(x+6)$ , you need to solve for $y$ , because you are looking for the equation of the line in slope-intercept form:

$y=mx+b$

Being $m$ the slope of that line, and $b$ the intersection of the line with the y-axis.

Then:

Apply Distributive property:

$y+7=-\frac{2}{3}x-4$

Subtract 7 from both sides:

$y+7-(7)=-\frac{2}{3}x-4-(7)\\y=-\frac{2}{3}x-11$

Rewrite the equation:

$f(x)=-\frac{2}{3}x-11$ (The linear function of the First option)

3 0

4 years ago

Read 2 more answers

Y=-x^2+2x+10 y=x+2 Substitution Need ASAP

aniked [119]

Answer:

$x_1=\frac{1+\sqrt{33} }{2},y_1=\frac{5+\sqrt{33} }{2}\\ \\ x_2=\frac{1-\sqrt{33} }{2},y_2=\frac{5-\sqrt{33} }{2}$

Explanation:

You must find the solution of the system using the substitution method.

System:

$y=-x^2+2x+10\\\\ y=x+2$

Substitute x+2 for y:

$x+2=y=-x^2+2x+10$

Pass all the terms to one side:

$x^2-2x+x+2-10\\ \\ x^2-x-8=0$

Use the quadratic formula to solve:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\ \\ x=\frac{-(-1)+/-\sqrt{(-1)^2-4(1)(-8)} }{2(1)}\\ \\ x=\frac{1+/-\sqrt{1+32} }{2}$

$x_1=\frac{1+\sqrt{33} }{2}\\ \\x_2=\frac{1-\sqrt{33} }{2}$

Use y = x + 2 to find the value of y:

$y_1=2+x_1=2+\frac{1+\sqrt{33} }{2}\\ \\y_1=\frac{5+\sqrt{33} }{2} \\\\y_2=2+x_2=2+\frac{1-\sqrt{33} }{2}\\ \\ y_2=\frac{5-\sqrt{33} }{2}$

6 0

3 years ago

A Straight fence is to be Constructed from post 6 inches wide by which are Separated by Chain link sections that are 4 feet long

andrew11 [14]

Answer:

any length less then 5 ft

6 0

4 years ago

Find the function f (x) =ax2 + bx+ c whose graph contains the points (1, 2), (-2,-7), and (2, -3). Write the system of equations

yan [13]

what grade you r?????....

3 0

3 years ago

Time (minutes)

damaskus [11]

Answer: The extra-size chart

5 basketball
3 footballs
5 running
3 jogging
4 jumping jacks
5 sit up

Step-by-step explanation:

4 0

3 years ago