1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liubo4ka [24]
2 years ago
6

Someone help PLEASE

Mathematics
1 answer:
Iteru [2.4K]2 years ago
7 0

Answer:

<h2>Q4. (-7)</h2><h2>Q5. (-8)</h2>

Step-by-step explanation:

The perfect square:

(a+b)^2=a^2+2ab+b^2

Q4

We have

y^2+14y+49=0\\\\y^2+2(y)(7)+7^2=0\\\\(y+7)^2=0\iff y+7=0\qquad\text{subtract 7 from both sides}\\\\\boxed{y=-7}

Q5

We have

y^2+16y+64=0\\\\y^2+2(y)(8)+8^2=0\\\\(y+8)^2=0\iff y+8=0\qquad\text{subtract 8 from both sides}\\\\\boxed{y=-8}

You might be interested in
Find the measure of each side indicated. Round to the nearest tenth.​
Vinil7 [7]

Answer:

Step-by-step explanation:

to find x we can use tangent function

tan 31= x/9

0.60=x/9

x=0.60*9=5.4 choice B

8 0
2 years ago
Read 2 more answers
Evaluate V= bh divided by 3 for B= 9 in 2 and h=32 in
Luba_88 [7]
It would be 96 because V=(9)(32)= 288/3=96
8 0
3 years ago
How many hundreds flats are equal to 400 tens rods
vitfil [10]
40 hundreds flats. 400 tens = 4,000. 40 hundreds also equals 4,000.
4 0
3 years ago
Read 2 more answers
What is the equation of the line perpendicular to 3x+y= -8that passes through -3,1? Write your answer in slope-intercept form. S
Gekata [30.6K]

Slope intercept form of a line perpendicular to 3x + y = -8, and passing through (-3,1) is y=\frac{1}{3} x+2

<u>Solution:</u>

Need to write equation of line perpendicular to 3x+y = -8 and passes through the point (-3,1).

Generic slope intercept form of a line is given by y = mx + c

where m = slope of the line.

Let's first find slope intercept form of 3x + y = -8

3x + y = -8

=> y = -3x - 8

On comparing above slope intercept form of given equation with generic slope intercept form y = mx + c , we can say that for line 3x + y = -8 , slope m = -3  

And as the line passing through (-3,1) and is  perpendicular to 3x + y = -8, product of slopes of two line will be -1  as lies are perpendicular.

Let required slope = x  

\begin{array}{l}{=x \times-3=-1} \\\\ {=>x=\frac{-1}{-3}=\frac{1}{3}}\end{array}

So we need to find the equation of a line whose slope is \frac{1}{3} and passing through (-3,1)

Equation of line passing through (x_1 , y_1) and having lope of m is given by

\left(y-y_{1}\right)=\mathrm{m}\left(x-x_{1}\right)

\text { In our case } x_{1}=-3 \text { and } y_{1}=1 \text { and } \mathrm{m}=\frac{1}{3}

Substituting the values we get,

\begin{array}{l}{(\mathrm{y}-1)=\frac{1}{3}(\mathrm{x}-(-3))} \\\\ {=>\mathrm{y}-1=\frac{1}{3} \mathrm{x}+1} \\\\ {=>\mathrm{y}=\frac{1}{3} \mathrm{x}+2}\end{array}

Hence the required equation of line is found using slope intercept form

4 0
2 years ago
(2x^3+6x-1)+(3x^2-7x)
Neporo4naja [7]

Answer:

2x^3+2x-1

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • There are 12 brown socks and 6 blue socks in a drawer. In the dark, Jason pulls out a sock and puts it on his right foot. Then h
    14·1 answer
  • What is 7/12 divided by 14/15
    12·2 answers
  • Round 32, 336 to the nearest 1000
    5·1 answer
  • Cannonballs are stacked in a pyramid shape with a triangular base of 5 cannonballs on a side. How many cannonballs in all are in
    6·1 answer
  • Which equation is equivalent to y=2/3x−6
    7·1 answer
  • Solve the following quadratic equation by factorising first x^2 + 5x - 14 =0
    11·1 answer
  • Find b and round to the nearest tenth... (geometry) plz help fast i’m behind
    11·1 answer
  • A grain silo is built from two right circular cones and a right circular cylinder with internal measurements represented by the
    6·1 answer
  • Hi again, need help on this please, This is for my End-Of-Year Test, help!
    14·1 answer
  • Ishan and Hazel plan to retire at age 60 with a retirement income of $48,000 a year from their savings. Rather than pay themselv
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!