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
Nuetrik [128]
2 years ago
7

PLS HELP ME I really need help right now (15 points)

Mathematics
2 answers:
GrogVix [38]2 years ago
5 0
A - 50
b - 10
c - 40
d - 20
e - 70
Arlecino [84]2 years ago
3 0

Answer:

(a) - 50

(b) - 10

(c) - 40

(d) - 20

(e) - 70

You might be interested in
The difference of two numbers.(a,b) is 21. The difference of 5 times a and 2 times b is 18. What are the values of a,b?
ziro4ka [17]
The equation is b-a= 21;
2b-5a = 18
a=8 and b= 29
therefore 29-8= 21
2 (29) -5 (8) = 18
58-40=18
7 0
3 years ago
Can anyone help? I’d greatly appreciate it :)
Lena [83]

Answer:

bilmiyorum sna kolu gelsın

8 0
2 years ago
A 4 meter ladder leans against a house forming a
Ket [755]

Answer:

2.meters

Step-by-step explanation:

Lenght of ladder = 4 m

θ = 30°

To obtain h;

Using Pythagoras rule :

Sinθ = opposite / hypotenus

Hypotenus = 4 ; opposite = h

Sin 30 = h / 4

0.5 = h / 4

h = 0.5 * 4

h = 2 m

Hence, distance between th efoot of ladder and the base of the wall is 2 m

6 0
2 years ago
Write the equation of the circle whose center is (-4,8) and has a diameter of 18
svetoff [14.1K]

Answer:

(x + 4)^2 + (y - 8)^2 = 81

or

(x + 4)^2 + (y - 8)^2 = 9^2 depending on how your teacher wants it written.

Step-by-step explanation:

The standard form for a circle is

(x + h)^2 + (y + k)^2 = r^2

r is the radius.

You are given the diameter

r = d/2

r = 18/2

r = 9

So you already have the right hand side of the equation

(x + h)^2 + (y + k)^2 = 9*2

(x + h)^2 + (y + k)^2 = 81

You basically have h and k as well. They come from the center point.

h = 4

k = - 8

So the equation of the circle (and the answer) is

(x + 4)^2 + (y - 8)^2 = 81

One question remains. Why do the x and y values change signs? If you know what the distance formula is, then what you are finding is the distance r of all points on the circle from the center of the circle.

It is the distance formula that is actually the formula for the circle.

6 0
2 years ago
Which two equations would be most appropriately solved by using the zero product property? Select each correct answer.
LekaFEV [45]
The zero product property tells us that if the product of two or more factors is zero, then each one of these factors CAN be zero.

For more context let's look at the first equation in the problem that we can apply this to: (x-3)(x+4)=0

Through zero property we know that the factor (x-3) can be equal to zero as well as (x+4). This is because, even if only one of them is zero, the product will immediately be zero.

The zero product property is best applied to factorable quadratic equations in this case.

Another factorable equation would be 2x^{2}+6x=0 since we can factor out 2x and end up with 2x(x+3)=0. Now we'll end up with two factors, 2x and (x+3), which we can apply the zero product property to.

The rest of the options are not factorable thus the zero product property won't apply to them.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Write the equation in slope intercept form of the line that is perpendicular to y=-3x+7 and passes through the point (6,-4)
    7·2 answers
  • A rectangular prism has a volumen of 96ft. the area of the bas is 24ft what is height of the prism?
    10·1 answer
  • in the diagram ,a and 46° are complementary angles. It is given that a and b are supplementary angles and the angle conjugate to
    14·1 answer
  • Given: BC = 10 inches AC = inches m∠CBD = 60° m∠CAD = 90° Calculate the exact area of the shaded region. Show all work for full
    8·1 answer
  • Why did the greenhouse call a doctor
    13·1 answer
  • Pls help again (picture below)
    15·1 answer
  • URGENT!!! PLEASE LOOK AT THE PICTURE!!! PLEASE HELP!!!!
    11·1 answer
  • Freee pointsssssssssss
    7·2 answers
  • 3(x+5)^2-12=0. What does x equal
    10·2 answers
  • What happens to the force between two charged objects when you triple the magnitude of both charges?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!