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3 years ago

For all of x, (x+4)(x-5)=?

Mathematics

2 answers:

Ludmilka [50]3 years ago

7 0

X= -4
x= 5
Equal the x’s to zero

scoundrel [369]3 years ago

6 0

Xsquared -x-20
all of x?

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a line is perpendicular to y=4x-2 and intersects the point (4,-11). what is the equation of this perpendicular line?

Lerok [7]

Answer:

y = -1/4x - 10

Step-by-step explanation:

<em>Hey there!</em>

<em />

Well to the slopes of 2 perpendicular lines are reciprocals of each other meaning if the line has a slope of 4 then it’s perpendicular line has a slope of -1/4.

Now to find the y intercept we need to graph,

y = -1/4x and point (4, -11)

Look at the image below.

By looking at the image below we can tell that in order for the perpendicular line to go through point (4,-11) it would be -10.

The equation is y = -1/4x - 10

<em>Hope this helps :)</em>

5 0

3 years ago

What is the measure of egf <br><br> A.40<br> B.55<br> C.65<br> D.80

Delicious77 [7]

Answer: C. 65

Step-by-step explanation:

Concept:

Here, we need to know the concept of an isosceles triangle.

An isosceles triangle is a triangle that has any two of its sides equal to each other. The corresponding angles of the equal sides are also equal.

If you are still confused, you may refer to the attachment below for a graphical explanation.

Solve:

Let x be m∠EGF

2x + 50 = 180 ⇒ Write the equation

2x + 50 - 50 = 180 - 50 ⇒ Subtract 50 on both sides

2x = 130 ⇒ Simplify

2x / 2 = 130 / 2 ⇒ Divide 2 on both sides

x = 65 ⇒ Simplify

Hope this helps!! :)

Please let me know if you have any questions

5 0

3 years ago

Read 2 more answers

a pie takes two-third of an hour to bake if a pie is put in at 7:30 what time do the pie need to be taken out

AlexFokin [52]

8:20

Step-by-step explanation:

8 0

3 years ago

Two factories — Factory A and Factory B — design batteries to be used in mobile phones. Factory A produces 60% of all batteries,

elena-s [515]

Answer:

Probability that a battery is both made by Factory A and defective is 0.012 or 1.2%.

Step-by-step explanation:

We are given that Two factories — Factory A and Factory B — design batteries to be used in mobile phones. Factory A produces 60% of all batteries, and Factory B produces the other 40%.

2% of Factory A's batteries have defects, and 4% of Factory B's batteries have defects.

Let the Probability that factory A produces batteries = P(A) = 0.60

Probability that factory B produces batteries = P(B) = 0.40

<em>Also, let D = event that battery is defective</em>

Probability that batteries have defects given that it is produced by Factory A = P(D/A) = 0.02

Probability that batteries have defects given that it is produced by Factory B = P(D/B) = 0.04

Now, <u>probability that a battery is both made by Factory A and defective</u> = Probability that factory A produces batteries $\times$ Probability that batteries have defects given that it is produced by Factory A

= P(A) $\times$ P(D/A)

= 0.60 $\times$ 0.02 = 0.012 or 1.2%

Therefore, the probability that a battery is both made by Factory A and defective is 1.2%.

4 0

3 years ago

Solve the inequality.<br> 3x+6<3(x-7)

GarryVolchara [31]

<h3> $\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{3x+6 < 3(x-7) } \end{gathered}$} }$ </h3>

Simplify both sides of the inequality.

$\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{3x+6 < 3x-21 } \end{gathered}$} }$

Subtract 3x from both sides.

<h3> $\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{3x+6-3x < 3x-21-3x } \end{gathered}$} }$ </h3><h3> $\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{6 < -21 } \end{gathered}$} }$ </h3>

Subtract 6 from both sides.

<h3> $\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{6-6 < -21-6 } \end{gathered}$} }$ </h3>

$\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{0 < -27} \end{gathered}$} }$

<h2>There are no solutions.</h2><h3>Standard form: x ∈ ∅</h3>

6 0

2 years ago

Read 2 more answers