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3 years ago

Which one is it pleaseee helppppp!

Mathematics

2 answers:

Ne4ueva [31]3 years ago

8 0

I can't see the image

ladessa [460]3 years ago

5 0

Answer:

-2/1

Step-by-step explanation:

i hope this helps :)

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The graph shown represents a the rule y=x+1.5

VashaNatasha [74]

Answer:

This is the equation of a line with slope of 1 and the intercept point wit the 'y' axis is (0, 1.5)

Step-by-step explanation:

Lines have the following equation: y=mx+b, where 'm' is the slope and b is the interception with 'y' axis when 'x'=0

The attached pictures shows the equation of the line in a graph

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3 years ago

What does x value 4x-2=3

Vaselesa [24]

Answer: 1.25

Step-by-step explanation:

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3 years ago

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Given: ABC is a right triangle with right angle C. AC=15 centimeters and m∠A=40∘ . What is BC ? Enter your answer, rounded to th

konstantin123 [22]

In order to answer this question, the figure in the first picture will be helpful to understand what a right triangle is. Here, a right angle refers to $90\°$ .

However, if we want to solve the problem we have to know certain things before:

In the second figure is shown a general right triangle with its three sides and another given angle, we will name it $\alpha$ :

The side opposite to the right angle is called The Hypotenuse (h)

The side opposite to the angle $\alpha$ is called the Opposite (O)

The side next to the angle $\alpha$ is called the Adjacent (A)

So, going back to the triangle of our question (first figure):

The Hypotenuse is AB

The Opposite is BC

The Adjacent is AC

Now, if we want to find the length of each side of a right triangle, we have to use the Pythagorean Theorem and Trigonometric Functions:

Pythagorean Theorem

$h^{2}=A^{2} +O^{2}$ (1)

Trigonometric Functions (here are shown three of them):

Sine: $sin(\alpha)=\frac{O}{h}$ (2)

Cosine: $cos(\alpha)=\frac{A}{h}$ (3)

Tangent: $tan(\alpha)=\frac{O}{A}$ (4)

In this case the function that works for this problem is cosine (3), let’s apply it here:

$cos(40\°)=\frac{AC}{h}$

$cos(40\°)=\frac{15}{h}$ (5)

And we will use the Pythagorean Theorem to find the hypotenuse, as well:

$h^{2}=AC^{2}+BC^{2}$

$h^{2}=15^{2}+BC^{2}$ (6)

$h=\sqrt{225+BC^2}$ (7)

Substitute (7) in (5):

$cos(40\°)=\frac{15}{\sqrt{225+BC^2}}$

Then clear BC, which is the side we want:

${\sqrt{225+BC^2}}=\frac{15}{cos(40\°)}$

${{\sqrt{225+BC^2}}^2={(\frac{15}{cos(40\°)})}^2$

$225+BC^{2}=\frac{225}{{(cos(40\°))}^2}$

$BC^2=\frac{225}{{(cos(40\°))}^2}-225$

$BC=\sqrt{158,41}$

$BC=12.58$

Finally $BC$ is approximately 13 cm

7 0

3 years ago

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Is 144 a natural number yes or no

Black_prince [1.1K]

Answer:

is 144 a natural number yes or no

Yes

I'm not sure

5 0

3 years ago

Jasmine wants to use her savings of $1,128 to buy video games and movies. The total price of the movies she bought was $72. The

maria [59]

Answer:

The answer is 24. First 1128 - 72 equals 1056 then divide by 43 which equals 24.55 but u cant buy 24.55 VD so its just 24

Step-by-step explanation:

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3 years ago