3 years ago

Write an English phrase that would translate into the following mathematical expression. 7z-4

Mathematics

1 answer:

ira [324]3 years ago

3 0

Answer: Four is less than seven times z

Step-by-step explanation:

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7 is subtracted from 7 times a number

PolarNik [594]

Answer:

(7x) - 7

Hope this helps!

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2 years ago

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In performing a chi-square goodness-of-fit test for a normal distribution, a researcher wants to make sure that all of the expec

Sholpan [36]

Answer:

The degrees of freedom for the chi square statistic is 7-4=3

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2 years ago

The current in a simple electric circuit varies inversely as the resistance. If the current is 20amps when the resistance is 5 o

IrinaVladis [17]

Answer:

0.5amps

Step-by-step explanation:

I is inversely proportional to resistance

I = k/R

k = I/ R

k = 20/5

k = 4

This means that, I = 4/R

So, when R = 8ohms,

I = 4/8

=0.5amps

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2 years ago

Find the distance between the points given. (-3, 2) and (9, -3) √(61) √(37)

cricket20 [7]

Answer:

d=13.

Step-by-step explanation:

d= $\sqrt{(x_{2}-x_{1} ) ^{2} +(y_{2}-y_{1} ) ^{2}}$

From question statement, $x_{1} =-3$ , $x_{2} =9$

$y_{1} =2$ , $y_{2} =-3$

put above values in the distance formula,we obtain

d= $\sqrt{(9-(-3))^{2}+(-3-2)^{2}}$

d= $\sqrt{(12)^{2}+(-5)^{2}}$

d= $\sqrt{144+25}$

d= $\sqrt{169}$

d=13

8 0

2 years ago

Y=-2x+3???????????????????????

Ksju [112]

Answer:

Step-by-step explanation:

make y=0

0=-2x+3 (Switch the 3 sides)

-3=-2x (Divide everything by -2, cant have a negative x)

2/3=x or 0.66=x

7 0

2 years ago