3 years ago

Where is the answer to the expression 3 − 7 located on a horizontal number line?

Mathematics

1 answer:

netineya [11]3 years ago

5 0

Answer:

4 units to the left of 3 7 units to the left of 3 4 units to the right of 3 7 units to the right of 3

Step-by-step explanation:

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How do you solve the quadratic equation x2-7=0

12345 [234]

X^2-7=0
Add 7 to both sides.
x^2=7
Find the sqr root of 7.
It's about 2.6

5 0

3 years ago

Help please only in number 15!!!!!$ thank youuuuuu

hodyreva [135]

This is the answer...

y=250-25x
y=30+30x

5 0

3 years ago

An object at the top of a building with height 110 feet is thrown upward with an initial speed of 23 ft/s. Find its position z(t

alina1380 [7]

Answer:

Step-by-step explanation:

Given

Height of building is $h=110\ ft$

Initial upward velocity $u=23\ ft/s$

height of object is given by

$z(t)=ut+\frac{1}{2}gt^2$

but building is already at a height of 110 ft so z(t) must be given by

$Z(t)=ut+\frac{1}{2}(-g)t^2+110$

$Z(t)=23\times t-\frac{1}{2}\times 9.8\times t^2$

$Z(t)=-16t^2+23t+110$

Time when it hits is given by when Z(t)=0[/tex]

$-16t^2+23t+110=0$

$t=\frac{-23\pm \sqrt{(23)^2-4\times (-16)\times 110}}{2\times (-16)}$

$t=\frac{-23\pm 87}{-32}$

$t=3.43\ s$

6 0

3 years ago

(m+n)¹⁰; The 6th term will contain m?n?

Nataly_w [17]

Answer:

252.m^5.n^5

Step-by-step explanation:

6 0

2 years ago

Solve each quadratic equation. Show your work. 4x^2=100

ZanzabumX [31]

Hello there!

4x² = 100

We wanna start by dividing both sides by 4

4x²/4 = 100/4

x² = 25

Now we can take square root

x = +/-√25

x = 5 or x = -5

As always, it is my pleasure to help students like you!

4 0

3 years ago