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2 years ago

Select all the expressions that are equivalent to 9 + 7x – 3y.

Mathematics

1 answer:

Lisa [10]2 years ago

7 0

Answer:

9 – (–7)x – 3y

Step-by-step explanation:

because - * - = +

so 9 – (–7)x – 3y = 9+7x -3y

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Round to the nearest hundredth (Geometric Series problem)

WITCHER [35]

Answer:

15.98

Step-by-step explanation:

∑₁¹⁰ $8(\frac{1}{4} )^{n-1}$

$=8[1+\frac{1}{4} +\frac{1}{16} + ........ +t_{10}]$

We have to use the formula of sum of a G.P. series with common ratio r < 1.

If the first term is a, the common ratio is r and the number of terms is n then the sum [a + ar + ar² + ar³ + ......... up to n terms] is given by

$[a \times\frac{1-r^{n} }{1-r}]$

$= 8[1 \times \frac{1-\frac{1}{2^{10} } }{1-\frac{1}{2} } ]$

$= 15.98$ (Answer)

4 0

2 years ago

Two months later,The Jensen family takes their moms sedan on a different trip.When she fills the tank,Sally’s mom records the mi

riadik2000 [5.3K]

Answer:

18.04 gallons

Step-by-step explanation:

The cost of filling the empty tank of the vehicle is $71.98.

If each gallon of gas costs $3.99, then we have to find the volume of the sedan's tank in gallons.

Now, $3.99 is the cost of 1 gallon of gas.

Hence, $71.98 will be the cost of $\frac{71.98}{3.99} = 18.04$ gallons.

Therefore, the volume of the tank is 18.04 gallons. (Answer)

8 0

3 years ago

Can someone pls help?

ratelena [41]

The measure of angle 8 is 88 degrees

6 0

3 years ago

A figure is chosen from inside the blue region. Which statement about that figure is true?

lana [24]

Answer:

all 4 angles are congruent

Step-by-step explanation:

2 pairs of parallel sides.

4 right angles (90°).

Opposite sides are parallel and congruent.

All angles are congruent

6 0

3 years ago

What is the distance between points (12, 4) and (12, –10) on the coordinate plane?

Kipish [7]

<span>the distance between points (12, 4) and (12, –10) on the coordinate plane is 14 units.

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5 0

3 years ago

Read 2 more answers