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3 years ago

PLEASE HELP ASAP 25 PTS + BRAINLIEST FOR RIGHT/BEST ANSWER

Mathematics

2 answers:

Gennadij [26K]3 years ago

8 0

It's the first one (-3, 2, -5)

-Dominant- [34]3 years ago

6 0

Answer:

the last one

Step-by-step explanation:

-1,3,4

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4-9x= -14 solve the inequality.

polet [3.4K]

4 - 9x = -14
4 - 4 - 9x = -14 - 4
9/9x = -18/9
x = -2

6 0

3 years ago

Pls help:Find all the missing elements:

Yuliya22 [10]

Answer:

Step-by-step explanation:

In order to find B we must first angle C

To find angle C we use the sine rule

That's

$\frac{ |a| }{ \sin(A) } = \frac{ |c| }{ \sin(C) }$

From the question

a = 15

A = 70°

c = 14

So we have

$\frac{15}{ \sin(70) } = \frac{14}{ \sin(C) }$

$\sin(C) = \frac{14 \sin(7 0 ) }{15}$

$C = \sin^{ - 1} ( \frac{14 \sin(70) }{15} )$

C = 61.288

<h3>C = 61.3° to the nearest tenth</h3>

Since we've found C we can use it to find B.

Angles in a triangle add up to 180°

To find B add A and C and subtract it from 180°

That's

A + B + C = 180

B = 180 - A - C

B = 180 - 70 - 61.3

<h3>B = 48.7° to the nearest tenth</h3>

To find b we can use the sine rule

That's

$\frac{ |a| }{ \sin(A) } = \frac{ |a| }{ \sin(B) }$

$\frac{15}{ \sin(70) } = \frac{ |b| }{ \sin(48.7) }$

$|b| = \frac{15 \sin(48.7) }{ \sin(70) }$

b = 11.9921

<h3>b = 12.0 to the nearest tenth</h3>

Hope this helps you

6 0

3 years ago

10) through: (3.-1). slope = -1

Naddika [18.5K]

Answer:

$y = -x + 2$

Step-by-step explanation:

The question is to find the equation of the line going through the points (3,-1) and has a slope of -1.

First, the equation of a line is given as:

Equation = y = mx + b

Where

m is the slope

b is the y-intercept (y-axis cutting point)

We know the slope, so the equation becomes:

y = mx + b

y = -1x + b

y = -x + b

Now the point given is in the form (x,y), so

x = 3

y = -1

We substitute and find b:

y = -x + b

-1 = -3 + b

-1 + 3 = b

b = 2

Final Equation:

y = -x + 2

6 0

3 years ago

A baker has 8 5/8 cups of flour to make cupcakes. The baker used all of his flour to make 3 5/6 dozen cupcakes. How many cups of

frozen [14]

Answer: 1 dozen cupcakes can be made in 12 cups of flour.

Step-by-step explanation:

Given : The amount of flour a baker has = $8\dfrac{5}{8}\text{ cups}= \dfrac{8\times8+5}{8}\text{ cups}$

$=\dfrac{69}{8}\text{ cups}$

The number of cupcakes he made by using all flour = $3\dfrac{5}{6}=\dfrac{6\times3+5}{6}=\dfrac{23}{6}$

i.e. $\dfrac{23}{6}$ cupcakes made in $\dfrac{69}{8}$ cups of flour

By unitary method ,

1 cupcake made in $\dfrac{69}{8}\times\dfrac{6}{23}$ cups of flour.

i.e. 1 cupcake made in $\dfrac{9}{4}$ cups of flour.

Then , 12 cupcakes can be made in $12\times\dfrac{9}{4}$ cups of flour.

= 27 cups of flour.

Since<em> 1 dozen = 12</em>

Then , 1 dozen cupcakes can be made in 12 cups of flour.

3 0

3 years ago

Read 2 more answers

Question 3 of 10

zysi [14]

The tangent on the unit circle is y/x

<h3>How to determine the tangent value?</h3>

The point on the unit circle is given as:

Point = (x,y)

By default

(cos(ø), sin(ø)) = (x,y)

This means that:

cos(ø) = x

sin(ø) = y

The tangent of an angle is:

tan(ø) = sin(ø)/cos(ø)

So, we have:

tan(ø) =y/x

Hence, the tangent on the unit circle is y/x