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Elza [17]
3 years ago
5

3x+4y=17 and slove for y​

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

y=17/4 - 3x/4

Step-by-step explanation:

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Sadie simplified the expression StartRoot 54 a Superscript 7 b cubed EndRoot, where a greater-than-or-equal-to 0, as shown colon
Nadusha1986 [10]

Answer:

Sadie's error is " she made error in step 2 =\sqrt{3^2\times 6\times a^2\times a^5\times b^2\times b}  where a\geqslant 0"

Because she made error in splitting the powers to simplify the square root

<h3>Therefore the correct answer for Sadie's expression is 3ab\sqrt{6ab} where a\geqslant 0</h3>

Step-by-step explanation:

Given that " Sadie simplified the expression StartRoot 54 a Superscript 7 b cubed EndRoot, where a greater-than-or-equal-to 0, "

It can be written as \sqrt{54a^7b^3} where a\geqslant 0

The given expression is \sqrt{54a^7b^3} where a\geqslant 0

To find Sadie's error and explain the correct answer :

Sadie's steps are

\sqrt{54a^7b^3}  where a\geqslant 0

=\sqrt{3^2\times 6\times a^2\times a^5\times b^2\times b}

=3ab\sqrt{6a^5b}

<h3>\sqrt{54a^7b^3}=3ab\sqrt{6a^5b} where a\geqslant 0</h3><h3><u>Now corrected steps are</u></h3>

\sqrt{54a^7b^3}  where a≥0

=\sqrt{(9\times 6)(a^{6+1})(b^{2+1})

=\sqrt{(3^2\times 6)(a^6.a^1)(b^2.b^1) (by using the identity a^{m+n}=a^m.a^n

=\sqrt{3^2\times 6\times ((a^3)^2.a)(b^2.b) (by using the identity a^{mn}=(a^m)^n )

=3ab\sqrt{6ab}

Therefore \sqrt{54a^7b^3}=3ab\sqrt{6ab}  where a\geqslant 0

<h3>The correct answer is 3ab\sqrt{6ab} where a\geqslant 0</h3>

Sadie's error is " she made error in step 2 =\sqrt{3^2\times 6\times a^2\times a^5\times b^2\times b} " where a\geqslant 0

Because she made error in splitting the powers to simplify the square root

<h3>Therefore the correct answer for Sadie's expression is 3ab\sqrt{6ab} where a\geqslant 0</h3>
5 0
3 years ago
Read 2 more answers
Four accounting majors, two economics majors, and three marketing majors have interviewed for five different positions with a la
Slav-nsk [51]

Answer:

Option c

Step-by-step explanation:

From the question we are told that:

Four accounting majors N_a=4

Two economics majors  N_e=2

Three marketing majors  N_m=3

Total Applicants N_T=9

Generally the equation for Different ways that five of these could be hired is mathematically given by

X_5=^9P_5

X_5=\frac{9!}{(9-5)!}

X_5=15120

Generally the equation for Different ways that Three of these could be hired is mathematically given by

X_3=^9P_3

X_3=\frac{9!}{(9-5\3)!}

X_3=504 ways

Option c

5 0
3 years ago
In the diagram, line r is parallel to BC.
WITCHER [35]

Answer:

d

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The area of a rectangle is 150 in². The ratio of the length to the width is 3:2. Find the length and the width.
kap26 [50]

Answer:

Width = 10 in

Length = 15 in

Step-by-step explanation:

L / W = 3 / 2

L = 3/2 W

L * W = 3/2 W *W = 3/2 W² = 150

w² = 150 * 2/3 = 100

W = 10 in

L = 15 in

8 0
3 years ago
Let f(x)=3x-1.then find g(x):if f(g(x))=9x the power of 2+12x+8​
irga5000 [103]

Step-by-step explanation:

plus Answer. work out 2 to 5 Questions

3 0
2 years ago
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