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mel-nik [20]
2 years ago
8

Please help me! I really need help!

Mathematics
1 answer:
NemiM [27]2 years ago
8 0

Answer:

7d +d +d=45

Step-by-step explanation:

The length shown for the green line is shown as 45 therefore the black line also has 45

to prove your answer:

7d + d + d = 45

9d = 45

you need to get the letter d on its own so you

9d ÷9 = 45 ÷ 9 (what you do on the one side,you do on the other)

d = 5

*substitute

5 + 7(5) + 5

= 5+ 35 + 5

= 40 +5

= 45

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Flura [38]

Answer:

......................found it

7 0
2 years ago
Read 2 more answers
Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76
yKpoI14uk [10]

Answer:

12 cm²

Step-by-step explanation:

Length of rectangle = 5.6 cm

Width of rectangle = 2.1 cm

Area of rectangle = Length of rectangle×Width of rectangle

⇒Area of rectangle = 5.6×2.1

⇒Area of rectangle = 11.76 cm²

11.76 has 4 significant figures in order to write this term in 2 significant terms we round of the term

The last digit in the decimal place is 6. Now, 6≥5 so we round the next digit to 8 we get

11.8

Now the last digit in the decimal place is 8. Now, 8≥5 so we round the next digit to 2 we get

12

∴ Hence the area of the rectangle when rounded to 2 significant figures is 12 cm²

5 0
3 years ago
Never mind my question but free brainiest
Sav [38]

What is your question?

6 0
3 years ago
Read 2 more answers
If Esteban counted the number of steps it took him to school .And he counted 1,138 steps how many steps does he take walking to
Semmy [17]

Answer:

1,138 steps

Step-by-step explanation:

According to the scenario, computation of the given data are as follows,

Steps counted to school = 1,138

So, we can calculate the steps he take walking to school by using following formula,

Steps take walking to school = Steps he counted to school

So, Steps take walking to school = 1,138 steps

Hence, Esteban take 1,138 steps while walking to school.

7 0
3 years ago
4. ADEF is an equilateral triangle.<br> E<br> 24<br> 20<br> D<br> F
irinina [24]

By Pythagorean theorem

x²+GF²=EF² ( where G is the point of intersection of perpendicular lines)

now, GF=1/2 EF= 12

x²+12²=24²

x²=24²-12²

x²=432

x=√432

x=12√3

x≈20.78

7 0
2 years ago
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