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Alisiya [41]
3 years ago
12

How many variable terms are in the expression 3x3y +5x2-4y+z+9?numeric value only

Mathematics
1 answer:
natta225 [31]3 years ago
4 0

Answer:

im pretty sure its 5

Step-by-step explanation:

x, y, x, y, z

Hope this helps!

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I NEED HELP ! ill mark brainlist
Naya [18.7K]

Answer:(x + 3)(x + 3)

Step-by-step explanation:

8 0
3 years ago
F(x) =- (3x +9) – 13 find f(-5)
belka [17]

f(x) = -(3x + 9) - 13\\f(-5) = -(3 \cdot (-5) + 9) - 13\\= -(-15 + 9) - 13\\= -(-6) - 13\\= 6 - 13\\= - 7

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10|x+8| - 13 = -2|x+8|+11
PilotLPTM [1.2K]
Use the app Socratic
4 0
3 years ago
A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken
trasher [3.6K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Group 1:

μ1 = 59.7

s1 = 2.8

n1 = sample size = 12

Group 2:

μ2 = 64.7

s2 = 8.3

n2 = sample size = 15

α = 0.1

Assume normal distribution and equ sample variance

A.)

Null and alternative hypothesis

Null : μ1 = μ2

Alternative : μ1 < μ2

B.)

USing the t test

Test statistic :

t = (m1 - m2) / S(√1/n1 + 1/n2)

S = √(((n1 - 1)s²1 + (n2 - 1)s²2) / (n1 + n2 - 2))

S = √(((12 - 1)2.8^2 + (15 - 1)8.3^2) / (12 + 15 - 2))

S = 6.4829005

t = (59.7 - 64.7) / 6.4829005(√1/12 + 1/15)

t = - 5 / 2.5108165

tstat = −1.991384

Decision rule :

If tstat < - tα, (n1+n2-2) ; reject the Null

tstat < t0.1,25

From t table :

-t0.1, 25 = - 1.3163

tstat = - 1.9913

-1.9913 < - 1.3163 ; Hence reject the Null

5 0
3 years ago
3 1/5 divided by 1 1/7
Katarina [22]
<span>2.8 is the answer for that question</span>
8 0
3 years ago
Read 2 more answers
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