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alexandr1967 [171]
2 years ago
9

Please help!! I’m confused

Mathematics
1 answer:
finlep [7]2 years ago
5 0
The answer is D

Hopefully this helps
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The number of girls in cobbs class is 2 less than 3 times the number of boys. She has 26 students in her class how many are boys
Natalka [10]

Answer:

7 are boys

Step-by-step explanation:

Make a system of equations where g is for girls and b is for boys.

b+g=26

g=3b-2

Substitute "3b-2" in for "g" in the first equation.

b+(3b-2)=26

Rewrite without the parentheses because it's addition and not multiplication.

b+3b-2=26

Combine like terms.

4b-2=26

Add 2 to both sides.

4b=28

Divide by the coefficient of the variable to get it alone.

b=7

3 0
4 years ago
Ayudaaaa por favor es urgente​
ss7ja [257]

Answer:

use trig

Step-by-step explanation:

sin(15) = 100/x

x = 100/sin(15)

use calculator

8 0
4 years ago
Between which 2 consecutive numbers is radical 46
Nuetrik [128]
\bf \sqrt{46}\approx 6.78239983
\\\\\\
\boxed{6}\text{\textemdash\textemdash\textemdash\textemdash\textemdash\textemdash\textemdash\textemdash}6.78239983\text{\textemdash\textemdash\textemdash}\boxed{7}
5 0
3 years ago
Where does the graph of y=2x2-x-3 cross as the x-axis?
tiny-mole [99]
This can be determined by finding the x-intercept. In doing so, we let y=0 to find the value of x.

y= 2x^2 -x -3
[0 = 2x^2 -x-3]÷2
0 = x^2 -1/2 x - 3/2

Complete the squares:

1/16 + 3/2 = x^2 - 1/2x + 1/16
25/16 = (x -1/4)^2
sqrt (25/16) = x - 1/4
+/- 5/4 = x - 1/4

Thus,
x = 1/4 + 5/4 = 3/2
x = 1/4 - 5/4 = -1

Thus, the graph crosses at x = 3/2 and x = -1.
6 0
4 years ago
What is equivalent to -2(x5)
anzhelika [568]
-10x is the final answer
Hope this helps
3 0
3 years ago
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