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2 years ago

Plz help me First right is brainliest

Mathematics

2 answers:

AysviL [449]2 years ago

6 0

Answer:

20 are cows 10 chickens 20 times 4 is 80 10 times 2 equals 20 80+20=100

Step-by-step explanation:

11Alexandr11 [23.1K]2 years ago

5 0

Answer:

I got 15×4=60 15×2=30 and add them together and you get 90 in sorry it's not 100 but its the closest number I got which is 15 cows × 4 legs and 15 chickens × 2 legs

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Using Desmos.com or the Pythagorean Theorem find the distance between points A and B rounded to the nearest tenth.

Nesterboy [21]

Answer:

B. 8.6

Step-by-step explanation:

Given:

Draw a right angled triangle ABC as as shown below.

From the triangle $\Delta ABC$ ,

Calculate the number of units from A to C and from C to B, we get

AC = 7 units and BC = 5 units.

Now using Pythagorean Theorem,

$AB^{2}=BC^{2}+AC^{2}\\AB^{2}=(7)^{2}+(5)^{2}\\AB^{2}=49+25\\AB^{2}=74$

Taking square root on both sides, we get

$\sqrt{AB^{2}}=\sqrt{74}\\AB=8.6$

Therefore, the distance between points A and B rounded to the nearest tenth is 8.6 units.

4 0

2 years ago

Help please ;(

netineya [11]

1. A
2. B
3. C

Commutative property;

x + y = y + x

x • y = y • x

Associative property

(x+y) + z = x + (y + z)

Identity property

X + 0 = X

8 0

1 year ago

In △ABC, m∠A=57°, m∠B=37°, and a=11. Find c to the nearest tenth.

kykrilka [37]

Answer:

$c=13.1\ units$

Step-by-step explanation:

step 1

Find the measure of angle C

Remember that the sum of the interior angles of a triangle must be equal to 180 degrees

A+B+C=180°

we have

A=57°

B=37°

substitute

57°+37°+C=180°

94°+C=180°

C=180°-94°=86°

step 2

Find the measure of side c

Applying the law of sines

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute

$\frac{11}{sin(57\°)}=\frac{c}{sin(86\°)}$

$c=\frac{11}{sin(57\°)}sin(86\°)$

$c=13.1\ units$

8 0

3 years ago

10+2 =12 12-2=10 what are these operations called?

kipiarov [429]

These operation are called reverse operation......... I hope this helps

4 0

3 years ago

Three numbers are in the ratio 3:9:10. If 10 is added to the last number, then the three numbers form an arithmetic progression.

MrRa [10]

Answer:

 The numbers are 6, 18, and 30 

Step-by-step explanation:

If the three numbers are in the ratio of 3:9:10,

let the numbers be 3x, 9x and 10x.

If 10 is added to the last number to form an arithmetic progression

Then, 3x 9x (10x+10) are the progression

The common difference of an arithmetic progression (d) = T₂ - T₁ = T₃ - T₂

T₂-T₁ = T₃ - T₂ .............. Equation 1

Where T₁ = first term of the progression, T₂ = Second term of the progression, T₃ = third term of the progression

Given: T₁ = 3x, T₂ = 9x, T₃ = 10x +10

Substituting these values into equation 1

9x-3x = (10x+10)-9x

Solving the equation above,

3x = 10+x

3x-x = 10

2x = 10

x = 10/2

x = 2.

Therefore the numbers are 6, 18, and 30 

7 0

3 years ago