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vovikov84 [41]
2 years ago
12

Karen and bill collector coins Karen has x coins but Bill has eight coins fewer than three times the number of coins Karen has t

o write and simplify an expression for the total numbers of coins Karen and bill have.
Mathematics
1 answer:
zhuklara [117]2 years ago
8 0
Bill y= 3x-8
In total; y= 4x-8+x
???
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If 2x − 4(x + 1) = −12, evaluate x2 − 1.
Vlad [161]
2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
-2x=-8
x=-8/-2
x=4

2) we evalute x²-1
x²-1=4²-1=16-1=15

Answer: 15
6 0
3 years ago
In a class, half of students had gone to watch magic show. Twice the square root of
love history [14]

Answer:

The total number of students is 36.

Step-by-step explanation:

You would get this answer because twice the square root of 6. 6x6 is 36. Hope this helps :)

3 0
2 years ago
Can someone please help me with this help me please!!!
Katen [24]

Answer:

30 degrees

Step-by-step explanation:

4 0
3 years ago
A scale on a blue print drawing of a house shows that 10 1010 centimeters represents 2 22 meters. What number of actual meters a
Ivenika [448]

Answer:

On Blue print 18 centimeters represents <u>3.6 meters</u>.

Step-by-step explanation:

Given:

Scale is 10 cm = 2 m

We need to find the number of actual meters are represented by 18 1818 centimeters on the blue print.

Solution:

Now we know that;

10 cm = 2 m

so 1 cm = Number of meters in 1 cm.

By using Unitary method we get;

Number of meters in 1 cm = \frac{2}{10}=0.2\ m

Now we know that;

1 cm = 0.2 m

18 cm = Number of meters in 18 cm.

Again by using Unitary method we get;

Number of meters in 18 cm = 0.2\times 18 = 3.6\ m

Hence On Blue print 18 centimeters represents <u>3.6 meters</u>.

7 0
2 years ago
Please help again thank you in advance
mojhsa [17]

Answer:

20 units

Step-by-step explanation:

Since the triangle is equilateral then all 3 sides are equal in length.

Equate any 2 sides and solve for x

4x = 3x + 5 ( subtract 3x from both sides )

x = 5

hence

4x = 4 × 5 = 20

3x + 5 = (3 × 5) + 5 = 15 + 5 = 20

7x - 15 = (7 × 5) - 15 = 35 - 15 = 20

The lengths of the sides are 20 units

7 0
3 years ago
Read 2 more answers
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