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3 years ago

HELP!!! I AM TAKING A TEST!!!

Mathematics

2 answers:

MAVERICK [17]3 years ago

6 0

Answer:

My gut says B.

Step-by-step explanation:

zhannawk [14.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

1 /3 + 3/4 + 1/2

= 13/12 + 1/2

= 19/12 = 1 7/12

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The table below represents the total number of laps Jessica swam in the pool this summer:

Minchanka [31]

Compare the linear function given with the slope-intercept form of a line, given by,

$y=mx+b$

Where m is the slope and b is the y-intercept.

Comparing tells us that 10 is the slope. What does it mean?

It means for every unit increase in w (weeks), there is a 10 unit increase in number of laps.

This is choice 4.

ANSWER: "The number of laps Jessica increased her swim by each week"

3 0

4 years ago

Read 2 more answers

..vertex: (4, -1) f(3) = -6

s344n2d4d5 [400]

Answer:

$\huge\boxed{f(x)=-5(x-4)^2-1=-5x^2+40x-81}$

Step-by-step explanation:

The vertex form of an equation of a parabola:

$f(x)=a(x-h)^2+k$

$(h;\ k)$ - vertex

We have

vertex $(4;\ -1)\to h=4;\ k=-1$

$f(3)=-6$

Therefore we have:

$f(x)=a(x-4)^2+(-1)=a(x-4)^2-1$

Substitute $x=3$ and $f(3)=-6$

$a(3-4)^2-1=-6\qquad|\text{add 1 to both sides}\\\\a(-1)^2=-6+1\\\\a(1)=-5\\\\a=-5$

Finally:

$f(x)=-5(x-4)^2-1=-5(x^2-2(x)(4)+4^2)-1\\\\=-5(x^2-8x+16)-1=-5x^2+(-5)(-8x)+(-5)(16)-1\\\\=-5x^2+40x-80-1=-5x^2+40x-81$

4 0

4 years ago

Joey built a model sailboat that is similar to his real sailboat. The triangular sail on

lord [1]

Answer:

31.25

Step-by-step explanation:

25/12=2.083333

15 x 2.0833333=31.24999999995

round up to get 31.25

3 0

3 years ago

158÷37 show work need help

denis-greek [22]

Here’s a pic of my work, it shows that the numbers 2,7,0 repeat.

Hope this helps!! :)

8 0

3 years ago

Heeeerllllllppppppppp

maks197457 [2]

Answer:

x=11

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers