2 years ago

Need help with my math!

Mathematics

1 answer:

kykrilka [37]2 years ago

7 0

12x+7+6x-7=90
12x+6x=90
18x=90
x=5

6(5)-7=
30-7=23

Q=23

You might be interested in

What is the arc measure of BDC in degrees?<br> (4k + 159)<br> P<br> (2k + 153)

andre [41]

<h2>Explanation:</h2><h2></h2>

The diagram is missing but I'll assume that the arc BDC is:

$(4k + 159)^{\circ}$

And another arc, let's call it FGH. measures:

$(2k + 153)^{\circ}$

If those arc are equal, then this equation is true:

$(4k + 159)^{\circ}=(2k + 153)^{\circ} \\ \\ (4k + 159)=(2k + 153) \\ \\ \\ Solving \ for \ k: \\ \\ 4k-2k=153-159 \\ \\ 2k=-6 \\ \\ k=-\frac{6}{2} \\ \\ k=-3$

Substituting k into the first equation:

$\angle BDC=(4(-3)+159)^{\circ} \\ \\ \angle BDC=(-12+159)^{\circ} \\ \\ \boxed{\angle BDC=147^{\circ}}$

3 0

2 years ago

Read 2 more answers

Find the measure of each numbered angle

Liono4ka [1.6K]

Angle 2 is 360- 258= 102

4 0

2 years ago

Read 2 more answers

Due to conservation efforts, the gray whale has been removed from the endangered species list. There are now 13,000 in the world

brilliants [131]

Answer:

$P = 13,000(1.11) ^ t$

Step-by-step explanation:

This scenario can be modeled using an exponential growth equation.

The exponential growth equations have the following form:

$P = p (1 + r) ^ t$

Where P is the population in year t

p is the initial population at t = 0

r is the growth rate

t is the time in years.

In this case we know that the current population is 13,000 and that the growth rate is 11%

$p = 13,000\\r = 0.11$

The equation that models this scenario is:

$P = 13,000(1 + 0.11) ^ t$

$P = 13,000(1.11) ^ t$

4 0

2 years ago

Solve the following equation for A. Be sure to take into account whether a letter is

Sati [7]

Answer:

4/a

Step-by-step explanation:

8 0

2 years ago

Evaluate q2+p; use p=5, and q=2

mars1129 [50]

Answer:

Step-by-step explanation:

(2)2 + 5 = 4 + 5 = 9

8 0

2 years ago

Read 2 more answers