Mathematics High School

4.6 isosceles and Equilateral triangles

Answers

Answer 1

Answer:

Step-by-step explanation:

1) All the sides are equal. So it is an equilateral triangle. SO, all the angles are equal

x = 60

2) In this triangle, two sides are equal. so, it is an isosceles triangle.

In isosceles triangle, angles opposite to equal sides are equal

x = 74

Related Questions

help please! ill mark brainliest

Answers

Answer:

90deg

Step-by-step explanation:

If the angles are supplementary, that means mA + mB = 180*

we know that

mA = (2x + 8)deg

mB = (2x + 8)deg = mA

mA + mB = 180deg

mB + mB = 2mB = 180deg

mB = 90deg

Note, that we did not need to compute x even, because the angles were the same.

Brian invests £1850 into his bank account. He receives 2.7% per year simple interest. How much will Brian have after 3 years? Give your answer to the nearest penny where appropriate.

Answers

Answer:

£1999.85

Step-by-step explanation:

A = P(1 + rt)

Where:

A = Amount after t years

P = Initial amount invested = £1850

r = Interest rate = 2.7%

t = Time in years = 3 years

Calculation:

First, converting R percent to r a decimal

r = R/100 = 2.7%/100 = 0.027 per year.

Solving our equation:

A = £1850(1 + (0.027 × 3))

A = £1999.85

Therefore, Brian will have £1999.85 after 3 years.

PLZ HELP MEEEEEEEEEEEEEE

Answers

Answer:

There are 24,640 yards in 14 miles.

Step-by-step explanation:

1,760 yds in 1 mile.

You are looking at 14 miles, so multiply 1,760 with 14.

1760 x 14=24,640 yards.

PLS HELP!!!

A circle is subdivided by a central angle of 90 degrees. The length of the subtended arc is 25 mm. What is the radius of the circle?

A:
[tex] \frac{50}{\pi} mm[/tex]
B:
[tex] \frac{\pi}{50} mm[/tex]
C:
[tex] \frac{25\pi}{2} mm[/tex]
D:
[tex]25mm[/tex]

Answers

Answer:

[tex](\text{A})\:\frac{50}{\pi}\:\text{mm}[/tex]

Step-by-step explanation:

This the arc is 90 degrees and there are 360 degrees in a circle, it makes up [tex]\frac{90}{360}=\frac{1}{4}[/tex] of the circle. Therefore, its length will be [tex]\frac{1}{4}[/tex] of the circumference. Since its length is 25 mm, the circumference is then [tex]25\cdot 4=100\:\text{mm}[/tex]. The circumference of a circle is given by [tex]2\pi r[/tex], where [tex]r[/tex] is the radius of the circle. Therefore, we can set up the following equation and solve for [tex]r[/tex]:

[tex]2\pi r=100[/tex]

Solving, we get:

[tex]2\pi r=100,\\\\r=\frac{100}{2\pi},\\\\r=\boxed{(\text{A})\:\frac{50}{\pi}\:\text{mm}}[/tex].

Question 2
O
Simplify the expression by combining like terms
Expression:-12x - 4x - 72 +10y3
Like Terms:
I
Simplified Expression:
> |

Answers

Answer:

Step-by-step explanation:

So you are combining the numbers that look alike practically..

They are asking for how many like term, so you would put how many numbers you see that are different.

-12x - 4x - 72 + 10y^3

-16x - 72 + 10y^3

That is as far as you could go.

There are 3 numbers that look different.

When I say this I mean that one number has no variable, one number has a variable, and another number has a variable and it’s cubed.

So that would be 3 like terms.

And for the simplified form, it’s

-16x - 72 + 10y^3

Hope this helps

HELP!!!!!!!!!!!!!! with this question

Answers

Answer:

It's B

Step-by-step explanation:

I think that it is B - 37. 7m²

I think the answer is c. I calculated the area on the calculator

1/2s+3/4s+1/4s+4 equals?

Answers

step1) Combine multiplied terms into a single fraction

step 2)Multiply by 1

step 3)Combine multiplied terms into a single fraction

step4) Combine multiplied terms into a single fraction

step5) Multiply by 1

who tryna be freinds

Answers

Answer:

I'm down but make me brainiest

Step-by-step explanation:

Answer:

sure

Step-by-step explanation:

Find the gcf of 20,50

Answers

Answer:

Step-by-step explanation:

Answer:

The GCF is 10

Step-by-step explanation:

The following factors that fit into 20 and 50 are as follows

We can go higher than 10, BUT, we would have to multiply that number by a decimal.

Answer:

382.041666667

point D(9,-8) is reflected to D'(9,8)

Answers

Answer:

reflected across the x axis

Answer:

y-intercept = 1

Step-by-step explanation:

y = -3x + b

(1 , -2)

Plugin the equation

-2 = -3*1 + b

-2 = -3 + b

-2 + 3 = b

1 = b

Which of the four statements is true and also write a one-step inequality as an example of when you would "flip" the sign.

Answers

Step-by-step explanation:

There are 5 types of Inequality sign :

1. = read '' equals to ''

2. > read '' greater than ''

3. < read '' less than ''

4. ≥ read '' greater than or equals to ''

5. ≤ read '' less than or equals to ''

Example -

1. 2 = 3 ( 2 is equals to 3 )

2. 3 > 2 ( 3 is greater than 2 )

3. 2< 4 ( 2 is less than 4 )

4. 3 ≥ 2 ( 3 is greater than or equals to 2)

5. 2 ≤ 4 ( 2 is less than or equals to 4 )

One - step inequality :

Addition and Subtraction Properties of Inequality -

If a > b, then a + c > b + c

If a > b, then a − c > b − c

Multiplication and Division Properties of Inequality -

If a > b, then ac > bc, if c > 0

If a > b, then ac < bc, if c < 0

If a > b, then [tex]\frac{a}{c} > \frac{b}{c}[/tex], if c > 0

If a > b, then [tex]\frac{a}{c} < \frac{b}{c}[/tex],, if c < 0

The inequality x > y can also be written as y < x. The sides of any inequality can be switched as long as the inequality symbol between them is also reversed(or flip ).Solving inequalities is same as solving equations, except you have to reverse( or flip ) the inequality symbols when you multiply or divide both sides of an inequality by a negative number.

I need help please what’s the answer?

Answers

Answer:

you equate 7x -2 with 4x+4

ie 7x - 2 = 4x + 4

collect the like terms

7x-4x = 4 + 2

3x= 6

x = 2

Which equation gives the sum of...?

Answers

Answer:

your answer will be C

Step-by-step explanation:

have a nice day/night bye!!

C will be your answer

PLEASE ANSWER!
The function shown is in the form y= x^2 + k. Determine the value of k.

A. -1
B. 0
C. 1
D. -1/2

Answers

I think the answer is - 1. I'm not sure

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