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3 years ago

Help me with this please it would help allot you will get brainliest

Mathematics

1 answer:

Helga [31]3 years ago

6 0

Answer:

1. 3 + 4 = 7 (they gave m already)

2. 9 - 4 = 5 (they gave both m and z)

3. 12 * 1/6 = 12/6 = 2 (they gave r)

4. 4(4) - 2 = 16 - 2 = 14 (they gave m)

5. 60 1/6 - 4 = 60/6 - 4 = 10 - 4 = 6

6. 3 1/6 * 1/6 = 3 * 1/12 = 3/12 = 1/4

All you have to do is substitute the variable with what they gave to u as a value

Hope this helped!

Have a supercalifragilisticexpialidocious day!

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Finding the missing angle measure

noname [10]

Answer: 31°

Since <DAB = 55° and <CAB = 24°, subtract 24 from 55.
55 - 24 = 31

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3 years ago

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Solve for x then solve for b

trasher [3.6K]

Answer:

x= 6 and b= 126°

Step-by-step explanation:

okay the first step to solving this is understanding what are the properties of ∠A and ∠B.

so the angles are equal to each other because they are alternate interior angles.

if that is settled it means the equation for both angles would be equal to each other as well.

∠A= 8x + 78° ∠B= 2x + 114°

therefore: 8x + 78= 2x + 114

then solve for x:

isolate x and the answer is equal to 6 at the end

now you are looking for angle b, so you input x which is 6 into the equation;

∠B= 2x + 114°

= 2(6) + 114°

=12 + 114°

=126°

3 0

3 years ago

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Lindsie is painting on a canvas with dimensions of 3 ft by 4 ft. She wants to make a display model for a gallery that has twice

love history [14]

Answer:

B. 1.4 feet

Step-by-step explanation:

Let, the amount of increase be 'x' ft.

Since, the length and width of the canvas are 4 ft and 3 ft respectively.

Thus, area of the canvas, $A_{c}$ = length × breadth = 4 × 3 = 12 ft²

Since, the area of display model is twice the area of the canvas. We have,

$A_{d}$ = 2 × $A_{c}$

i.e. $A_{d}$ = 2 × 12

i.e. $A_{d}$ = 24 ft².

As, the length and width of the canvas are increased by 'x'.

The, length and width of the display model are (x+4) ft and (x+3) ft.

So, we get,

$A_{c}$ = length × breadth = (x+4) × (x+3) = $x^{2} +7x+12$

Since, $A_{d}$ = 24 ft²

i.e. $x^{2} +7x+12$ = 24

i.e. $x^{2} +7x-12=0$

Solving the quadratic equation, we get,

i.e. x = -8.4 and x= 1.4

Since, the value of x cannot be negative.

Thus, x = 1.4 feet.

4 0

3 years ago

A triangle has three angles that measure 15 degrees, 85 degrees and (4x - 20). What is the value of x?

Lostsunrise [7]

180=15+85+(4x-20)
180-15-85=4x-20
80=4x-20
4x-20=80
4x=80+20
4x=100
x=100/4
x=25

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3 years ago

The spring has a stiffness k=200n/m and is unstretched when the 25 kg block is at

g100num [7]

To solve this we are going to use the formula fro the force applied to a spring: $F=ks$
where
$k$ is the spring constant
$s$ is the extension

Since we know the $F=ma$ , we can replace that in our formula and solve for $a$ :
$ma=ks$
$a= \frac{ks}{m}$
where
$a$ is the acceleration
$k$ is the spring constant
$s$ is the extension
$m$ is the mass

We know for our problem that $k=200$ , $s=0.4$ , and $m=25$ . So lets replace those values in our formula to find $a$ :
$a= \frac{ks}{m}$
$a= \frac{(200)(0.4)}{25}$
$a=3.5 \frac{m}{s^2}$

We can conclude that the acceleration of the block when s=0.4m is $3.5 \frac{m}{s^2}$ .

7 0

3 years ago