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vlada-n [284]
3 years ago
9

Please help asap it’s a test

Mathematics
1 answer:
12345 [234]3 years ago
3 0

Answer:

3x = 1.5x + 8.4

8.4/1.5=5.6

5.6 x 3 = 16.8

5.6 x 1.5 + 8.4 = 16.8

Step 1. Cancel out the -0.4 so you add 0.4 to both sides

Step 2. Divide 8.4 by 1.5 = 5.6

Step 3. Replace X with 5.6 and check if the equation is correct

5.6 is the answer

Step-by-step explanation:

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Dina planted a six-foot tree in her backyard which she expects to grow at the rate of 4 feet per year. Find the equation of the
Scrat [10]

Answer:

y = 6 + 4x

After 4 years, the tree would be 22 ft tall.

Step-by-step explanation:

Hi there!

Let x = the number of years that pass

Let y = the height of the tree (ft)

We're given that the 6-foot tree grows at a rate of 4 ft per year. This means that the height of the tree will be equal to 6 ft, the original height, plus another 4 ft every year that passes.

Height of tree = 6 feet + 4 feet × number of years that pass

y = 6 + 4x

To solve for how tall the tree would be 4 years after Dina plants it, replace x with 4, since 4 years have passed:

y = 6 + 4(4)

y = 6 + 16

y = 22

Therefore, the tree would be 22 ft tall.

I hope this helps!

8 0
3 years ago
1.9996 by 2 significant numbers
Svetradugi [14.3K]
1.9 or rounding with 2.0
8 0
3 years ago
15 + 3t - 5 - 8t what is the ANSWER to this
Vikki [24]
<span><span><span>15+<span>3t</span></span>−5</span>−<span>8t</span></span><span>=<span><span><span><span><span>15+<span>3t</span></span>+</span>−5</span>+</span>−<span>8t</span></span></span>Combine Like Terms:<span>=<span><span><span>15+<span>3t</span></span>+<span>−5</span></span>+<span>−<span>8t</span></span></span></span><span>=<span><span>(<span><span>3t</span>+<span>−<span>8t</span></span></span>)</span>+<span>(<span>15+<span>−5</span></span>)</span></span></span><span>=<span><span>−<span>5t</span></span>+10</span></span>Answer:<span>=<span><span>−<span>5t</span></span>+<span>10</span></span></span>
8 0
3 years ago
the the circle shape part of the necklace above has a diameter of 5 mm the circumfrence of the circle-shaped part of each of the
tankabanditka [31]
7.855 mm maybe the answer unless rounded to the tenths place to be 7.9 mm.
8 0
3 years ago
Read 2 more answers
Solve the equation by completing the square. -9n^2+79+=-18n
poizon [28]
Hello,
-9n²+79=-18n
==>9n²-18n-79=0
==>9(n²-2n+1-1)-79=0
==>9(n-1)²-88=0
==>[3(n-1)-2√22][3(n-1)+2√22]=0
==>3(n-1)=2√22 or 3(n-1)=-2√22
==>n-1=2/3*√22 or n-1=-2/3*√22
==>n=1+2/3*√22 or n=1-2/3*√22



6 0
3 years ago
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