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Anon25 [30]
3 years ago
8

What did they do wrong?

Mathematics
1 answer:
Tatiana [17]3 years ago
5 0
They didn’t distribute the -1 (which is the “-”) correctly into the numbers in the parentheses. After distributing correctly, step 1 should be
8a+3+5a-2a

Hope this helps :)
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Explain how you can tell how well a linear or exponential fits a set of data
kotykmax [81]
The coordinates that you record is an example of data from the graph I think
4 0
3 years ago
Suppose ray AT bisects Angle CAR. If the measure of Angle CAT is 5x, and
Tema [17]

Answer:

x=7

Step-by-step explanation:

since the ray bisects we know <CAT and <TAR are equal

so we can set up the equation like this: <CAT + <CAT = <CAR

(5x)+(5x)=(9x+7)

calculate equation and you'll get x=7

4 0
3 years ago
El valor de la x que permite resolver la ecuacion 3x-6=12
kupik [55]

Lo siento, si me equivoco en español no es mi lengua materna

Answer: x es 6

Step-by-step explanation:

3x-6=12

Agrega 6 en ambos lados.

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Dividir por 3 en ambos lados

3x se cancela y 18 dividido entre 3 es igual a 6.

8 0
3 years ago
A person on the ground looks up at an angle of 28° and sees the top of a tree and the top of a building aligned. The tree is 20
lorasvet [3.4K]

Answer:

21.27 meters.

Step-by-step explanation:

Please find the attachment.

Let H and h represent height of building and tree respectively.

We have been given that a person on the ground looks up at an angle of 28° and sees the top of a tree and the top of a building aligned. The tree is 20 m away from the person and the building is 60 m away from the person.

We know that tangent relates opposite side of a right triangle with its adjacent side.

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

\text{tan}(28^{\circ})=\frac{H}{60}

60\cdot \text{tan}(28^{\circ})=H

60\cdot 0.531709431661=H

H=31.90256589966\approx 31.90

Similarly, we can find height of the tree.

\text{tan}(28^{\circ})=\frac{h}{20}

20\cdot\text{tan}(28^{\circ})=h

20\cdot 0.531709431661=h

h=10.63418863322\approx 10.63

H-h=31.90-10.63

H-h=21.27

Therefore, the difference in heights between the building and tree is 21.27 meters.

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3 years ago
Eric walks around a triangular path at each corner, he records the measure of the angle he creates. he makes one complete circui
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Hijdndndnddkdnndndndnd
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