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4 years ago

Need help with number 3

Mathematics

1 answer:

marin [14]4 years ago

3 0

IM THINKING B.)
HOPE ITS RIGHT LOL

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The sum of a number times 7 and 15 is at least -19

Anastaziya [24]

Answer:

x(7+15) $\leq$ -19

Step-by-step explanation:

4 0

3 years ago

noa buys 6 items that each cost 4.25 and 3 items that each cost 6.75. How much does noa spend in total

Elena L [17]

Answer:

$45.75

Step-by-step explanation:

6 * 4.25 = 25.5

3 * 6.75 = 20.25

25.5 + 20.25 = 45.75

Best of Luck!

3 0

3 years ago

Read 2 more answers

use the quadratic formula to find the zeros of the function round to the tense of necessary y= 17x^2-21

Kitty [74]

$y=17x^2-21\\\\\text{The zeros of the function:}\ y=0\iff17x^2-21=0\ \ \ |+21\\\\17x^2=21\ \ \ |:17\\\\x^2=\dfrac{21}{17}\to x=\pm\sqrt{\dfrax{21}{17}}\\\\x\approx-1.1\ \vee\ x\approx1.1$

$\text{Use the quadratic formula:}\\\\y=17x^2-21\\\\a=17;\ b=0;\ c=-21\\\\b^2-4ac=0^2-4\cdot17\cdot(-21)=1428\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-0-\sqrt{1428}}{2\cdot17}=-\dfrac{\sqrt{1428}}{34}\approx-1.1\\\\x_2=\dfrac{-0+\sqrt{1428}}{2\cdot17}=\dfrac{\sqrt{1428}}{34}\approx1.1$

6 0

3 years ago

Please help thank you so much

VLD [36.1K]

Answer:

The common difference is -1.4

Step-by-step explanation:

The common difference is found by taking 2nd term and subtracting the first term

7.3-8.7 = -1.4

Lets check by taking the 3rd term and subtracting the 2nd term

5.9-7.3 = -1.4

The common difference is -1.4

7 0

3 years ago

Write an equation to determine the value of x.

Ksju [112]

Step-by-step explanation:

A random equation? Or was there a part before this? Or was it a story problem or something? Tell me in the comments for this answer and I'll answer it there if I can, I don't want free points for answering a question with a question

7 0

4 years ago