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2 years ago

Solve the equation. y + 3 = –y + 9

2 answers:

8 0

The answer is y=3

To show my work here.

1. regroup terms ( y + 3 = 9 - y)

2. subtract 3 from both sides ( y = 9 - y - 3)

3. simplify 9 - y - 3 to 6 - y ( y = 6 - y)

4. add y to both sides ( y + y = 6)

5. simplify y + y to 2y (2y = 6)

6. divide both sides by 2 ( y = 6/2)

7. simplify 6/2 to 3 ( finally y = 3)

Hope this helps, and if it does don't forget to mark as brainliest.

dimulka [17.4K]2 years ago

3 0

Answer:

y=3

Step-by-step explanation:

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Please can someone help me.

Vladimir79 [104]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Find the area of the shape shown below.

oee [108]

Answer:

=6 units squared

Step-by-step explanation:

area=1/2h(a+b)

=1/2×2(4+2)

7 0

3 years ago

Help me pleaseeeee?!

den301095 [7]

Answer:

#1: -1.5, -0.5, 1/2, 1.5

#2: -3, -1, 1.2, 2.3

Step-by-step explanation:

First we have to figure out the correct order before we plot.

Find the biggest number:

looking at the number the biggest would be 1.5

Find the smallest number:

Looking at the number the smallest would be -1.5

Now that we have that we can easily figure out the rest...

(Going from least to greatest; like on a number line)

-1.5, -0.5, 1/2, 1.5 (That is how you will place the first one)

(Use the steps from above to find the answer)

Biggest: 2.3

Smallest: -3

Order: -3, -1, 1.2, 2.3 (Placing on number line use that order)

Hope this helps :)

8 0

2 years ago

A right △ABC is inscribed in circle k(O, r). Find the radius of this circle if:

natta225 [31]

We have been given that a right △ABC is inscribed in circle k(O, r).

m∠C = 90°, AC = 18 cm, m∠B = 30°. We are asked to find the radius of the circle.

First of all, we will draw a diagram that represent the given scenario.

We can see from the attached file that AB is diameter of circle O and it a hypotenuse of triangle ABC.

We will use sine to find side AB.

$\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}$

$\text{sin}(30^{\circ})=\frac{AC}{AB}$

$\text{sin}(30^{\circ})=\frac{18}{AB}$

$AB=\frac{18}{\text{sin}(30^{\circ})}$

$AB=\frac{18}{0.5}$

$AB=36$

Wee know that radius is half the diameter, so radius of given circle would be half of the 36 that is $\frac{36}{2}=18$ .

Therefore, the radius of given circle would be 18 cm.

8 0

3 years ago

A toxic radioactive substance with the density of 4 mg/cm² is detected in the been detected in the ventilating ducts that was us

Kruka [31]

The formula for half-life is:

$A = P(0.5)^{t/h}$

A is the amount remaining, P is the initial amount, t is the time that has passed, and h is the half-life of the substance. Plug in the values that you know and solve:

$4 = P(0.5)^{35/20} \\ \\ 4 = P(0.5)^{1.75} \\ \\ P = \frac{4}{0.5^{1.75}} \\ \\ P \approx 13.4543426441$

Rounded to the nearest whole number, the density of the substance was about 13<span>mg / cm².</span>

8 0

2 years ago