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barxatty [35]
3 years ago
14

Does 76.8 or 76.9 round up to 77?

Mathematics
1 answer:
Rainbow [258]3 years ago
4 0
I am guessing 76.9 because it is closer to 77, but both of them round up
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True or false? A figure that has opposite sides with equal lengths and equal slopes and diagonals with slopes that are negative
Alex787 [66]

Answer:

False.

Step-by-step explanation:

The diagonals are at right angles ( because of the negative reciprocal slopes)

so it could be a square or a rhombus.

3 0
2 years ago
Find the quadratic function that has a vertex at (3,4) and goes through the point (0,13).​
vladimir2022 [97]

Answer:

f

(

x

)

=

−

1

2

x

2

+

3

x

−

1

2

Explanation:

A quadratic function can be written in vertex form as:

f

(

x

)

=

a

(

x

−

h

)

2

+

k

where

(

h

,

k

)

is the vertex and

a

is a constant multiplier.

In our example the vertex

(

h

,

k

)

is

(

3

,

4

)

, so we can write:

f

(

x

)

=

a

(

x

−

3

)

2

+

4

Given that this passes through the point

(

1

,

2

)

, we must have:

2

=

a

(

1

−

3

)

2

+

4

=

4

a

+

4

Subtract

4

from both ends to get:

−

2

=

4

a

Divide both sides by

4

and transpose to find:

a

=

−

1

2

So our quadratic function can be written in vertex form as:

f

(

x

)

=

−

1

2

(

x

−

3

)

2

+

4

We can multiply this out and simplify as follows:

f

(

x

)

=

−

1

2

(

x

−

3

)

2

+

4

f

(

x

)

=

−

1

2

(

x

2

−

6

x

+

9

)

+

4

f

(

x

)

=

−

1

2

x

2

+

3

x

−

9

2

+

4

f

(

x

)

=

−

1

2

x

2

+

3

x

−

1

2

Step-by-step explanation:

PLZ MARK ME BRAINLYIST

4 0
3 years ago
It’s is integer fractions in 7th grade mathematics
Goryan [66]
Can you post a picture of your question? I can help
3 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match the linear equations with their x-
jolli1 [7]

Answer:

Part 1) x-2y=2 ----> (2,0) and (0,-1)

Part 2) -3x+3y=7 ----> (-7/3,0) and (0,7/3)

Part 3) 7x-y=21 ----> (3,0) and (0,-21)

Part 4) 3x-5y=-20 ----> (-20/3,0) and (0,4)

Step-by-step explanation:

we know that

The y-intercept is the value of y when the value of x is equal to zero

The x-intercept is the value of x when the value of y is equal to zero

Part 1) we have

x-2y=2

1) <u><em>Find the x-intercept</em></u>

For y=0

x-2(0)=2\\x=2

the x-intercept is (2,0)

2) <u><em>Find the y-intercept</em></u>

For x=0

0-2y=2\\y=-1

the y-intercept is (0,-1)

Part 2) we have

-3x+3y=7

1) <u><em>Find the x-intercept</em></u>

For y=0

-3x+3(0)=7\\x=-\frac{7}{3}

the x-intercept is (-7/3,0)

2) <u><em>Find the y-intercept</em></u>

For x=0

-3(0)+3y=7\\y=\frac{7}{3}

the y-intercept is (0,7/3)

Part 3) we have

7x-y=21

1) <u><em>Find the x-intercept</em></u>

For y=0

7x-(0)=21\\x=3

the x-intercept is (3,0)

2) <u><em>Find the y-intercept</em></u>

For x=0

7(0)-y=21\\y=-21

the y-intercept is (0,-21)

Part 4) we have

3x-5y=-20

1) <u><em>Find the x-intercept</em></u>

For y=0

3x-5(0)=-20\\x=-\frac{20}{3}

the x-intercept is (-20/3,0)

2) <u><em>Find the y-intercept</em></u>

For x=0

3(0)-5y=-20\\y=4

the y-intercept is (0,4)

8 0
3 years ago
Alan already baked five cakes and he can bake one cake with each additional stick of butter he buys with 10 additional sticks of
nevsk [136]
With 10 more butter sticks Alan can bake 15 cakes if I'm not mistaken
6 0
3 years ago
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