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3 years ago

Help!!!! And is the first on correct

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

7 0

2s+5≥49

First: Subtract 5 on both sides
You'll get: 2s ≥ 44
Last: Divide each side by 2 so your s would be alone
You'll get: s ≥ 22 <That would be your answer

HOPE THIS HELPS! ^_^

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Apply the distributive property to factor out the greatest common factor. 90+27=?

Lady bird [3.3K]

Answer:

Step-by-step explanation:

The distributive property:

a × (b + c) = a × b + a × c

90 = 9 × 10

27 = 9 × 3

90 + 27 = 9 × 10 + 9 × 3 = 9 × (10 + 3)

6 0

3 years ago

PLZ HELP I WILL GIVE BRIANLY!

kumpel [21]

Answer:36

Step-by-step explanation:

$\frac{4}{7} =\frac{48\\}{84}$

for every 7 students there are 4 girls, so for every 84 there must be 48

7*12=84

4*12=48

so, in all 84 students there are 48 girls

so amount of boys=84-48=36

there are 36 boys

8 0

2 years ago

a long board 4.7 thick is cut into three pieces of equal length these three pieces are then stacked the stack is cut in three eq

nalin [4]

The number of pieces per stack after 3 cuts represented by a power expression can be written as $3^{3}$

The number of equal pieces per cut = 3

The number of cuts made = 3

Using a power expression :

The number of of equal pieces per cut is raised to a power which represents the number of cuts made

Thus we have $number\: of \:equal\: pieces^{number\: of \:cuts}$

After 1 cut ; $3^{1} = 3$
After 2 cuts ; $3^{2} = 3\times3 = 9$
After 3 cuts ; $3^{3} = 3\times3\times3 = 27$

Therefore, the Number of pieces present in stack after 3 cuts is $3^{3}$

Learn more :brainly.com/question/18796573

5 0

3 years ago

In a random sample of n1 = 162 males, there are x1 = 63 people that have blue eyes. In a random sample of n2 = 333 females, ther

sesenic [268]

Answer:

z = 2.1784 > 1.96,

Reject the null hypothesis

Step-by-step explanation:

For the males:

n1 = 162, x1 = 63

P1 = x 1/ n1 = 0.3889

For the Females:

n2 = 333,

x2 = 97

P 2 = x2/n2

= 0.2913

P 1= P2 Null hypothesis

P 1 is not equal to P 2 alternative hypothesis

Pooled proportion:

P= (x1 + x2) /( n1+ n2)

= (63 + 97) / (162 + 333)= 0.3232

Test statistics :

Z= (p1 - p2) /√p(1-p)× (1/n1 + 1/n2)

0.3889- 0.2913 / √0.3232 × 0.6768 × (1/162 +1/333)

=2.1784

c) Critical value :

Two tailed critical value, z critical = Norm.S .INV (0.05/2) = 1.960

Reject H o if z < -1.96 or if z > 1.96

d) Decision:

z = 2.1784 > 1.96,

Reject the null hypothesis

7 0

3 years ago

HALP PLEASE DO 6 AND 7 PLEASEEE

Harman [31]

Answer:

Step-by-step explanation:

6) Convert mixed fraction to improper fraction and then plugin the values in the formula.

$l= 3\frac{1}{3} yard=\frac{10}{3}\\\\w = 1\frac{5}{9} yard=\frac{14}{9}\\\\h =2\frac{1}{4} yard=\frac{9}{4}\\\\Volume of wood shed = l * w *h\\\\= \frac{10}{3}*\frac{14}{9}*\frac{9}{4}\\\\= \frac{5}{3}*\frac{7}{1}*\frac{1}{1}\\\\=\frac{5*7}{3}\\\\=\frac{35}{3}\\\\=11\frac{2}{3} cubic yard$

b) 10 cubic yard is less than 11 2/3 cubic yard. So, it will fit in the wood shed.

7) Right side rectangular prism:

l = 16 in

w = 5 in

h = 20 - 14 = 6 in

Volume 1 = 16 * 5 * 6 = 480 cubic inches

Left side rectangular prism:

l = 9 in

w = 5 in

h =14 in

Volume 2 = 9 * 5 * 14 = 630 cubic in

Volume of composite solid = 480 + 630 = 1110 cubic inches

7 0

3 years ago