A bookstore had 90 copies of a magazine. Yesterday, it sold 2/5 of them. Today, it sold 2/3 of what remained. How many copies does the bookstore have left?

Answer:1) 43 2)53 3)22 4)23

Step-by-step explanation:

Answer:

130

Step-by-step explanation:

If you start out with 40 stamps thanks to Garcie's grandma, than are given 30 for every month in the span of 3 months, 30 x 3 is 90, plus 40 is 130.

Answer:

i think its 130

Step-by-step explanation:

30×3 is 90 then add the 40 that the grandmother gave

Answer:

u not get the answer

Step-by-step explanation:

Answer:

y - axis

hope it is helpful to you

Answer:

y axis

Step-by-step explanation:

It lies in y axis because X=0

Answer:

x^2y^-4

Step-by-step explanation:

Answer:

i think the answer is x²y/6

Answer:

x = 2

Step-by-step explanation:

2 to the second power is 4. 4 subtracted by 4 is zero.

Answer:

C that is the answer hope I helped you guys

The Earth orbits the Sun and rotates around its own axis. The Moon orbits the Earth and is held in place by the Earth’s gravity. This is why the length of a day is gradually increasing over time.

The Moon’s gravitational pull causes the tides, which is why the ocean’s water level rises and falls. The gravitational pull of the Moon also affects the Earth’s rotation by slowing it down slightly. This is why the length of a day is gradually increasing over time.

The Earth orbits the Sun and rotates around its own axis, while the Moon orbits the Earth and is held in place by the Earth’s gravity. The Moon’s gravitational pull causes the tides and affects the Earth’s rotation by slowing it down slightly, resulting in a gradual increase in the length of a day.

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The unknown number deduced by solving the equation 4x - 1 = 6x +9 is -5.

What is an equation?

A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("=").

Let the unknown number be x.

First multiply the number by 4 = 4x

Then subtract 1 from it = 4x -1

This results in the same number as when the number is multiplied by 6 and 9 is added to it = 6x + 9.

So the equation will be -

4x - 1 = 6x +9

4x - 6x = 9 + 1

-2x = 10

-x = 10/2

x = -5

Therefore, the number obtained is -5.

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If you take a number, times by 4 then subtract 1. You get the same as if you took the number, times by 6 then add 9. What is the number?

Answer: Perimeters Are Shown Below

Step-by-step explanation:

6. 2 Hexagons; 1+1+1+1+1+1+1+1+1+1   OR 1 x 10

6. 3 Hexagons; 1+1+1+1+1+1+1+1+1+1+1+1+1+1  OR 1 x 14

7. 2 Pentagons; 1+1+1+1+1+1+1+1  OR 1 x 8

7. 3 Pentagons; 1+1+1+1+1+1+1+1+1+1+1  OR 1 x 11

Answer:

1. y-2=2/3(x-1) slope: y=2/3x+4/3 standard: 2x-3y=-4

Step-by-step explanation:

A problem is just a function or even a mapping of inputs to outputs. An algorithm is a recipe for solving a problem with concrete and unambiguous steps.

In mathematics and computer science, an algorithm is a finite sequence of rigorous instructions used to solve a class of specific problems or perform a computation.

Algorithms are data calculation and processing specifications. More advanced algorithms can use conditionals to divert code execution through various paths (referred to as automated decision-making) & deduce valid inferences (referred to as automated reasoning), eventually achieving automation.

Alan Turing used metaphorical terms like "memory", "search," and "stimulus" to describe machines.

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Answer:

Yaritza will have to pay $83.50 dollars to go to the movies.

It will cost $31.50 for 7 snacks for her family to share.

Step-by-step explanation:

Answer:

A) 6

Step-by-step explanation:

in a 30-60-90° Δ the ratio of side lengths is 1 : [tex]\sqrt{3}[/tex] : 2

so we can set up this proportion and cross-multiply:

[tex]\sqrt{3}[/tex] / 1 = y / 2[tex]\sqrt{3}[/tex]

y = 2[tex]\sqrt{3}[/tex][tex]\sqrt{3}[/tex] which is 2x3 or 6

Answer: 2 11/12

Step-by-step explanation: 3 1/3+−2 1/4+1 5/6

10/3−2 1/4+1 5/6

10/3−9/4+1 5/6

13/12+1 5/6

13/12+11/6

35/12

2 11/12

Answer:

Here is the answer. hope this helps you

Answer:

2

Step-by-step explanation:

slope equation: y2-y1/x2-x1

2-(-2)/3-1=4/2=2

Answer:

[tex]x = \frac{-9}{8} , \frac{-10}{7} , \frac{10}{7}[/tex]

Step-by-step explanation:

8x+9=0

8x=-9

[tex]x = \frac{-9}{8}[/tex]

or

[tex]49x^{2}-100 = 0[/tex]

[tex](7x)^{2} -10^{2} =0[/tex],

[tex](7x+10)(7x-10)=0[/tex]

[tex]7x+10=0, 7x-10=0[/tex]

[tex]7x=-10, 7x=10[/tex]

[tex]x=-\frac{-10}{7}[/tex], [tex]x = \frac{10}{7}[/tex]

Answer:

plays an instrument/plays sports = 0.46

plays an instrument/does not play sports = 0.54

does not play an instrument/plays sports = 0.73

does not play an instrument/does not play sports = 0.27

Step-by-step explanation:

plays an instrument/plays sports = 6 divided by 13

plays an instrument/does not play sports = 7 divided by 13

~ you divide by 13 since the row's numbers add up to 13

does not play an instrument/plays sports = 8 divided by 11

does not play an instrument/does not play sports = 3 divided by 11

~ you divide by 11 since the row's numbers add up to 11

Answer:

Point 1 (-7, 1)

Point 2 (=9`, -5)

Point 3 (-2, 4)

Step-by-step explanation:

Step 1. Move each point by 1 to the left. (Shown in dark blue)

Step 2: Move the points in dark blue down by 7. (shown lin light blue)

Step 3: find each point by lining up x and y.

You can be identified by x being left to right resembling shaking your head saying "no"

for Y shake your head up and down for Yes.

The confidence interval is (22.68,29.52).

In statistics, a confidence interval describes the likelihood that a population parameter would fall between a set of values for a given percentage of the time. Confidence ranges that include 95% or 99% of anticipated observations are frequently used by analysts. Therefore, it can be concluded that there is a 95% probability that the true value falls within that range if a point estimate of 10.00 is produced using a statistical model with a 95% confidence interval of 9.50 - 10.50.

n = 10

x = 26.1

s = 4.2

Two-sided confidence interval :

CI = [tex](x-\frac{z*s}{\sqrt{n}},x+\frac{z*s}{\sqrt{n} } )[/tex]

    = [tex](26.1-\frac{2.576*4.2}{\sqrt{10}},26.1+\frac{2.576*4.2}{\sqrt{10}} )[/tex]

    = (26.1−3.42,26.1+3.42)

    = (22.68,29.52)

Hence, the confidence interval is (22.68,29.52).

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Answer:

hey!

Step-by-step explanation:

i really don't know if you added an image along with it, but if you did i can't necessarily see it?? it's weird ik but even when i refresh nothing shows. It just blurs it and says "Oop!"

Answer:

10cm

Step-by-step explanation:

Answer:

x ≈ 16.4 cm

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan26° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{8}{x}[/tex] ( multiply both sides by x )

x × tan26° = 8 ( divide both sides by tan26° )

x = [tex]\frac{8}{tan26}[/tex] ≈ 16.4 cm ( to 1 dec. place )

Answer:

x axis

Step-by-step explanation:

Answer:

y=-5x+4

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-1-(-6))/(1-2)

m=(-1+6)/-1

m=5/-1

m=-5

y-y1=m(x-x1)

y-(-6)=-5(x-2)

y+6=-5(x-2)

y=-5x+10-6

y=-5x+4

Answer:

Step-by-step explanation:

fter solving the algebraic equation, Miguel has 4 quarters, 12 dimes and 16 nickels.

What is algebra?

One of the earliest areas of mathematics that deals with number theory, geometry, and analysis is algebra. Algebra is also defined as the study of mathematical rules and symbols through the manipulation of those mathematical symbols.

The number of quarters is taken to be x, then the number of dimes will be 3x, and the number of nickels will be 3x + x = 4x

$3.00 when converted to cents is 300 cents.

The value of nickels is 5 x 4x=20x.

The value of dimes is 10 x 3x=30x.

The value of quarters is 25x.

As the total value of money Miguel has is 300 cents, then the algebraic equation will be -

20x + 30x + 25x = 300

Solve to get the value of x -

75x = 300

x = 4

Therefore, the amount of quarters is x = 4 quarters.

The amount of dimes is x = 3x = 3 x 4 = 12 dimes.

The amount of nickels is 4x = 4 x 4 = 16 nickels.

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Answer:

[tex]x = 58[/tex]

[tex]y = 90[/tex]

Step-by-step explanation:

A rhombus inner angle measure is 90 degrees.

So

[tex]y = 90[/tex]

This means the upper left angle of the top triangle measure is 58 becuase triangle interior theorem.

Since a rhombus bisects angles, angle x measure 58.

PLEASEEEEE CAN SOMEONE HELP MEEE??? (iI have TWO questions PLSPLSPLSPSLPLSPLSPLSP)

3.) What happened to Patroclus at the end of yesterday's reading?

He won the battle.

He went to Mt. Olympus to talk to Zeus.

He died.

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4.Who was Agamemnon trying to persuade to come fight with him again?

Patroclus

Achilles

Odysseus

Hector

The two characteristics of a star to become a black hole are:

The correct options are C and D.

When a star has consumed all its fuel (like hydrogen), that is to say, when it is at the end of its life, it can become a black hole. For this to happen, the mass of the star must be greater than 20 times the mass of the Sun. If a star is at the end of its life cycle but has a mass that is less than 20 times the Sun's mass, it will not become a black hole.    

The given options:

A. Its mass is equal to that of the sun. False

Its mass must be greater than 20 times the mass of the Sun.

B. It has an abundant supply of hydrogen. False

When it has an abundant supply of hydrogen, the star is at the beginning or the middle of its life cycle, and to become into a black hole it must be at the end of it.  

C. Its mass is greater than 20 times the mass of the Sun. True

Yes, its mass must be greater than 20 times the mass of the Sun.        

D. It is dying. True

The star must have no more fuel to continue its life cycle.  

Therefore, options C and D are correct.

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I hope it helps you!  

Answer:

C and D

Step-by-step explanation:

I just took the test lol, I hope you got 100%, also does like everyone on this website go to connexus or what lol

Answer:

X=8

use sin 30 and cross multiply

Answer:

C) x=8

Step-by-step explanation:

For a 30-60-90 triangle, the hypotenuse is equal to double the length of the short side, and the longer leg is equal to the short side times the square root of 3. Therefore, x=2(4)=8

Answer:

distance is 2 units

Step-by-step explanation:

9-7=2