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3 years ago

9, 10, 11? Help please

Mathematics

1 answer:

wlad13 [49]3 years ago

5 0

9. 20 because a bisector divides an angle into two equal angles

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Draw a place value model of 6.49.

solong [7]

6 squares 4 tens blocks and 9 ones blocks

7 0

3 years ago

Evaluate the equation for the indicated value, f(n)=5n+8 for f(4),

Colt1911 [192]

You would need to put 4 in for (n)so, 5(4)+8 then solve. 5 times 4=20 plus 8 is 28. I hope I could help!

7 0

3 years ago

Simplify. Write the expression using only positive exponents.<br> 7g⁻²/g⁴

Arte-miy333 [17]

Negative exponent will go down to become positive
7/g²g⁴=7/g⁶

6 0

4 years ago

A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 8

uysha [10]

Answer:

Step-by-step explanation:

Given :

Male Female Total

Registered 60

Non registered 40

Total 20 80

Solution :

N= 100

Formula of expected frequency = $E_{ij}=\frac{T_i \times T_j}{N}$

$E_{ij}$ = expected frequency for the ith row/jth columm.

$T_i$ = total in the ith row

$T_j$ = total in the jth column

N = table grand total.

So, using formula $E_{11}=\frac{T_1 \times T_1}{100}$

$E_{11}=\frac{60 \times 20}{100}$

$E_{11}=12$

$E_{12}=\frac{T_1 \times T_2}{100}$

$E_{12}=\frac{60 \times 80}{100}$

$E_{12}=48$

$E_{21}=\frac{T_2 \times T_1}{100}$

$E_{21}=\frac{40 \times 20}{100}$

$E_{21}=8$

$E_{22}=\frac{T_2 \times T_2}{100}$

$E_{22]=\frac{80 \times 40}{100}$

$E_{22}=32$

Expected frequency table

Male Female Total

Registered 12 48 60

Non registered 8 32 40

Total 20 80

So, the expected frequency for males who are registered voters are $E_{11}=12$

5 0

3 years ago

Mrs. Start's class paid $5.60 for 4/5 yd of lace for an art project. Later, the class decided to buy another 7 3/4 yd of the sam

MissTica

Answer:

$54.25

Step-by-step explanation:

4/5 yards of lace = $5.60

Price per yard = 5.60 ÷ 4/5

= 5.60 × 5/4

= 28 /4

= $7 per yard

The class decided to buy another 7 3/4 yd

Cost of 7 3/4 yd = cost per yard × number of yards

= $7 × 7 3/4

= $7 × 31/4

= 217 / 4

= $54.26

Cost of 7 3/4 yd = $54.25

8 0

4 years ago