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2 years ago

Evaluate 2x2+y23 for x = 1.5 and y = 3. Show all of your work.

Mathematics

1 answer:

Lera25 [3.4K]2 years ago

6 0

Answer:

73.5

Step-by-step explanation:

I assume you are trying to find 4x+23y. To do this, let's plug in 1.5 for x and 3 for y. When we do so, we get 4*1.5 + 23*3 = 6 + 69 = 75. Hope this helps!

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Solve 3x + 2 = 15 for x using the change of base formula log base b of y equals log y over log b. −1.594 0.465 2.406 4.465

disa [49]

<u>Answer:</u>

The value in 3x + 2 = 15 for x using the change of base formula is 0.465 approximately and second option is correct one.

<u>Solution:</u>

Given, expression is $3^{(x+2)}=15$

We have to solve the above expression using change of base formula which is given as

$\log _{b} a=\frac{\log a}{\log b}$

Now, let us first apply logarithm for the given expression.

Then given expression turns into as, $x+2=\log _{3} 15$

By using change of base formula,

$x+2=\frac{\log _{10} 15}{\log _{10} 3}$

x + 2 = 2.4649

x = 2.4649 – 2 = 0.4649

Hence, the value of x is 0.465 approximately and second option is correct one.

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2 years ago

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Can someone plz help me!!! 5-7?!

defon

Answer:

#5: d=22, #6: $m=4\frac1{10}$ , #7: $2\frac3{11}=z$

Step-by-step explanation:

#5:

$2\cdot (4\cdot5-3^2)=2\cdot (4\cdot5-3\cdot3)=2\cdot (20-9)=2\cdot11=22$

#6:

$5\frac25-1\frac3{10}=5\frac4{10}-1\frac3{10}=4\frac1{10}$

#7:

$\frac{40-15}{5+6}=\frac{25}{11}=2\frac3{11}$

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2 years ago

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a summer concert series has 12 different prerforming artisits. you decide to attend at least 4 of the concerts. how many differe

Maslowich

Answer:

48 I think

Step-by-step explanation:

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The closeness of measured values to other measured values is called

natulia [17]

Answer:

precision

Step-by-step explanation:

Accuracy is also correct if on e d g e n u i t y use precision

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Select the graphs that have an equation with a < 0.

Eddi Din [679]

Answer:

Second graph only.

Step-by-step explanation:

The standard equation of a parabola is ax^2+bx+c where a,b and c are coefficients.

If the coefficient of (a) is positive then the parabola is concave upwards (as in picture 1)

If the coefficient of (a) is negative then the parabola is concave downwards as in picture 2.

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2 years ago

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